Norway Maple

Spring 2023: How It Happened

/ Laura Tuke / Leave a comment

The last few years spring has been unusual and unpredictable, with the effects of climate change changing from month-to-month, year-to-year in Dorset. This year has fitted into this with months switching back and forth between record breaking dry spells or heat waves to rainfall or low temperatures. This is bound to have had an effect on nature and the wildlife around us, which is interesting to explore.

Last year there were trends towards earlier spring events or a slow start to spring and then a speeding up to events in April. I can already suggest that spring this year was slow to start as it gave me the opportunity to really experience spring as it got under way and unfolded in front of me. It will be interesting to see though, if this was the trend for trees, shrubs, flowers, insects and birds alike, if the trend differs to 2022 and how spring shaped up as a whole. Read on to see how my favourite season went this year in all its vibrancy!

Trees

Though in 2022 spring emergence dates for trees had crept earlier than the year before, in 2023 nearly all tree dates were later than 2022, following a more similar trend to 2021 and the proceeding years. Field maple and silver birch both flowered earlier in April, but otherwise ash, horse chestnut, english oak, wild cherry and Norway maple all budburst, unfurled leaves and flowered between 1 and 28 days later from March through to May. The same could be said for the leaves of field maple and silver birch. It was odd to see trees though, lacking their fineries for so long this year!

Flowers

In 2022, flowering times varied between species, but this could be split into half flowering earlier and half later than the year before. This year primroses, cuckooflowers and bluebells in woodland all flowered earlier (4, 2 and 1 day earlier respectively), but flowering trends generally followed a more similar pattern to to those of tree events, occurring later. For snowdrops, lesser celandines, daffodils, stitchwort, cowslips, wood anemones, early purple orchids, wild garlic, oxeye daisies, and hedgerow bluebells this was 1-16 days later between January and June. Interestingly yellow archangel was noticeably absent during its usual flowering time, and instead flowered 36 days later than in 2022 on 17th May, being greatly affected by climate and a great indicator of spring conditions.

Insects

Of 13 species recorded emerging during spring 2022, only 2 did not emerge earlier than the year before: the buff-tailed bumblebee and orange-tip butterfly. For 2023, spring flipped dates back around for insect emergences, with 10 out of 12 recorded species emerging later than the year before. This ranged from 2 days later with the speckled wood butterfly to 46 days later with the red admiral butterfly. The exceptions were peacock and comma butterflies, being recorded 15 and 36 days earlier respectively. This could be due to the colder spring impacting and delaying emergences, for example the brimstone butterfly, a common sign of spring, delayed its emergence until the 3rd of April 2023.

Shrubs

For shrub species recorded in 2022, spring events occurred both earlier and later than in 2021, with no obvious trends. In comparison, spring 2023 showed an obvious trend, with nearly all recorded budburst, first leaf unfurling and flowering for 6 species, occurring later than 2022. The exceptions were dog rose flowering earlier in May and hazel catkins flowering earlier in January. The other spring events took place 3-27 days later from February to May. It was an odd year to see blackthorn flowering 2 weeks later within March and meeting its peak in April, and hawthorn first flowering in May, later than usual.

Birds

There was a split with spring bird events in 2022, with events closer to the start of the season occurring later, and those towards the second half occurring earlier than 2021. For 2023, it seems that the dates of spring bird events were also split, but this time with less clear a trend. Rooks began building nests later and most birds fledged young later, but swallows arrived on the 11th April once again, and blackbirds began singing earlier in February. Some differences in event occurrence can be explained by spring temperatures and weather conditions, whereas some are less easily explained for 2023. It is expected though that the later spring will have an overall effect on bird species through other spring events occurring later.

Conclusion

Spring 2023 varied from month-to-month with weather, temperatures, natural events and vibrancy. As a whole, a general unsettled and cooler time led to spring events occurring later than the year before for many species. The concern is though, that there may be a mismatch between the occurrence of events for different species, such as trees and birds, which could have had a greater impact than currently known. Time will tell what the impact of spring 2023 may be!

Species List

  • Ash (Tree) Fraxinus excelsior
  • Blackbird (Bird) Turdus merula
  • Blackcap (Bird) Sylvia atricapilla
  • Blackthorn (Shrub) Prunus spinosa
  • Bluebell (Flowering Plant) Hyacinthoides non-scripta
  • Brimstone butterfly (Insect) Gonepteryx rhamni
  • Buff-tailed bumblebee (Insect) Bombus terrestris
  • Chiffchaff (Bird) Phylloscopus collybita
  • Comma butterfly (Insect) Polygonia c-album
  • Cowslip (Flowering Plant) Primula veris
  • Cuckoo (Bird) Cuculus canorus
  • Cuckooflower (Flowering Plant) Cardamine pratensis
  • Daffodil (Flowering Plant) Narcissus spp.
  • Dog rose (Shrub) Rosa canina
  • Early purple orchid (Flowering Plant) Orchis mascula
  • Elder (Shrub) Sambucus nigra
  • English oak (Tree) Quercus robur
  • Field maple (Tree) Acer campestre
  • Goldfinch (Bird) Carduelis carduelis
  • Greater stitchwort (Flowering Plant) Stellaria holostea
  • Great-spotted woodpecker (Bird) Dendrocopos major
  • Hawthorn (Shrub) Crataegus monogyna
  • Hazel (Shrub) Crataegus monogyna
  • Horse chestnut (Tree) Aesculus hippocastanum
  • House martin (Bird) Delichon urbicum
  • House sparrow (Bird) Passer domesticus
  • Lesser celandine (Flowering Plant) Ficaria verna
  • Meadow brown butterfly (Insect) Maniola jurtina
  • Norway maple (Tree) Acer platanoides
  • Orange-tip butterfly (Insect) Anthocharis cardamines
  • Oxeye daisy (Flowering Plant) Leucanthemum vulgare
  • Painted lady butterfly (Insect) Vanessa cardui
  • Peacock butterfly (Insect) Aglais io
  • Primrose (Flowering Plant) Primula vulgaris
  • Red admiral butterfly (Insect) Vanessa atalanta
  • Red-tailed bumblebee (Insect) Bombus lapidarius
  • Rook (Bird) Corvus frugilegus
  • Seven-spot ladybird (Insect) Coccinella septempunctata)
  • Silver birch (Tree) Betula pendula
  • Small tortoiseshell butterfly (Insect) Aglais urticae
  • Snowdrop (Flowering Plant) Galanthus spp.
  • Song thrush (Bird) Turdus philomelos
  • Speckled wood butterfly (Insect) Pararge aegeria
  • Starling (Bird) Sturnus vulgaris
  • Swallow (Bird) Hirundo rustica
  • Swift (Bird) Apus apus
  • Wild cherry (Tree) Prunus avium
  • Wild garlic (Flowering Plant) Allium ursinum
  • Wood anemone (Flowering Plant) Anemone nemorosa
  • Wren (Bird) Troglodytes troglodytes
  • Yellow archangel (Flowering Plant) Lamium galeobdolon
  • Yellowhammer (Bird) Emberiza citrinella

Spring 2022: How It Happened

/ Laura Tuke / 1 Comment

This year spring has been a blast of colour, abundance, and new beginnings. Though April experienced some cooler weather, and storms blew up here and there, on the whole spring was calm and dry. What characterised this spring most of all though was the weather being warmer in general, making spring 2022 the 5th warmest on average with a quarter less rainfall. Turbulent winter weather led to a slower start to spring, but the increasing warmer days led to spring speeding up and going out in a hurry in my home area of Dorset.

Last year weather patterns had a big influence on spring events, with events moving earlier or later as a result. For many species, events actually occurred later in spring in Dorset in 2021 due to cooler and wetter weather overall. For example, compared to 2020, oak leaves unfurled 31 days later, bluebells flowered 4 days later, and swallows arrived 5 days later. It was an unsual spring that was still joyful, but showed the unexpected impact that climate change is already having on spring events.

After the unpredictability of spring 2021, it will be interesting to see how spring events have fared this year in 2022. How is spring looking as a season overall in 2022? Did specific spring events get back on track or continue to become later? And did spring events continue to follow weather patterns? Read on to find out!

Trees

This year on my family’s farm we have seen a general trend for tree budburst, first leaf and first flowering occurring earlier than in 2021, showing dates more similar to those of 2020 or ones that were even earlier. This was true for beech (Fagus sylvatica), field maple (Acer campestre), horse chestnut (Aesculus hippocastanum), english oak (Quercus robur), wild cherry (Prunus avium), and Norway maple (Acer platanoides) trees, all between 9 and 28 days earlier. This was similar for ash (Fraxinus excelsior) and silver birch (Betula pendula) trees, but ash showed budburst 10 days later and silver birch first leaves 4 days later.

For first flowers, horse chestnut and ash trees shared the earlier trend with them blooming 2 and 34 days earlier respectively. For field maple, english oak, silver birch, wild cherry, and Norway maple flowers though, flowers actually appeared anywhere between 1 to 24 days later.

Shrubs

For blackthorn (Prunus spinosa), dog rose (Rosa canina), elder (Sambucus nigra), hawthorn (Crataegus monogyna), lilac (Syringa vulgaris), and hazel (Crataegus monogyna) first flowering occurred earlier than in 2021. This ranged from hazel flowers 5 days earlier to blackthorn flowers 21 days earlier.

Surprisingly for first budburst and first leaf, the opposite trend was actually shown. For blackthorn, dog rose, elder, hawthorn, and lilac these spring events were seen to occur on the same day as 2021 or later by 2-13 days. As these shrub events occur more towards the start of spring, maybe the slow start to spring was having an effect. Hazel budburst occurred 12 days earlier instead, but first leaf was delayed and ended up fitting the trend, unfurling 13 days later on 24th March.

Flowers

Though snowdrops (Galanthus spp.) first showed their snowy heads 12 days earlier on 6th January, first flowering was 6 days later for daffodils (Narcissus spp.) on 25th January, 11 days later for lesser celandines (Ficaria verna) on 26th January, and 45 days later for primroses (Primula vulgaris) on 14th February.

Other spring flowering species had a more mixed response to the season, either appearing earlier or later compared to 2021, as we moved from March to April. The earlier appearers were:

  • Bluebell (Hyacinthoides non-scripta) – 6 days earlier on 26th March
  • Early purple orchid (Orchis mascula) – 11 days earlier on 7th April
  • Yellow archangel (Lamium galeobdolon) – 22 days earlier on 11th April
  • Wild garlic (Allium ursinum) – 1 day earlier on 19th April
  • Oxeye daisy (Leucanthemum vulgare) – 16 days earlier on 18th May

The later appearers were:

  • Wood anemone (Anemone nemorosa) – 2 days later on 1st April
  • Greater stitchwort (Stellaria holostea) – 3 days later on 4th April
  • Cuckooflower (Cardamine pratensis) – 2 days later on 10th April
  • Cowslips (Primula veris) – 9 days later on 11th April

Grasses

This year all recorded grass species flowered earlier. Meadow foxtail (Alopecurus pratensis) first flowered 18 days earlier on 22nd April, Yorkshire fog (Holcus lanatus) 33 days earlier on 10th May, and cocksfoot (Dactylis glomerata) 21 days earlier on 19th May.

Birds

With birds, the first spring events of the year occurred later on average. For example, song thrushes (Turdus philomelos) were first heard singing 18 days later on 19th January, rooks (Corvus frugilegus) were first seen building their nests 2 days later on 27th February, and blackbirds (Turdus merula) were first heard singing 6 days later on 16th February.

As we reached March, events occurred earlier than in 2021, with chiffchaffs Phylloscopus collybita) arriving 3 days earlier on 13th March, cuckoos (Cuculus canorus), blackcaps (Sylvia atricapilla), and yellowhammers (Emberiza citrinella) first singing 3, 7 and 14 days earlier respecitvely in April, and great-spotted woodpeckers (Dendrocopos major) first fledging 10 days earlier on 6th June. Swallows (Hirundo rustica) were an exception though first returning to our land 1 day later on 11th April.

Insects

The majority of insects I recorded were first seen on the wing on our land earlier than in 2021, making the most of our more stable weather, These were:

  • Red-tailed bumblebee (Bombus lapidarius) – 27 days earlier on 3rd March
  • 7-spot ladybird (Coccinella septempunctata) – 1 day earlier on 19th March
  • Peacock butterfly (Aglais io) – 10 days earlier on 20th March
  • Small tortoiseshell butterfly (Aglais urticae) – 16 days earlier on 22nd March
  • Brimstone butterfly (Gonepteryx rhamni) – 26 days earlier on 23rd March
  • Red admiral butterfly (Vanessa atalanta) – 14 days earlier on 24th March
  • Speckled wood butterfly (Pararge aegeria) – 53 days earlier on 21st April
  • Small white butterfly (Pieris rapae) – 14 days earlier on 8th May
  • Painted lady butterfly (Vanessa cardui) – 43 days earlier on 17th May
  • Meadow brown butterfly (Maniola jurtina) – 27 days earlier on 22nd May
  • Comma butterfly (Polygonia c-album) – 31 days earlier on 17th June

The exceptions were the buff-tailed bumblebee (Bombus terrestris) that emerged 19 days later on 18th March and orange-tip butterfly (Anthocharis cardamines) first seen 18 days later on 18th April.

Summary

This year during spring, plants tended to flower earlier, which could be due to the on average less turbulent weather, alongside the possibility of stress responses being triggered by the increasing temperatures at times. As a result flowers appeared earlier and went over more quickly.

Budburst and leaves did not follow as consistent a trend, but on average plants went through these spring events later than 2021. This may be due to many of these events occurring more towards the beginning of spring, when day length and temperature increases would have only just started to take an effect. Bird events followed spring in general with a slow start and a quick finish, whilst insects emerged earlier, as expected after last year’s unpredictable weather.

This year I have enjoyed all that spring had to offer, though it felt like once it got started it rushed through to its finish. In the moment it was a glorious season, but was cut short in its splendour. Being my favourite season, this year I was particularly sad when the season went over in to summer. Let’s see what will happen during the seasons to come and enjoy the adventures to be had!

How to… Identify British Tree Species (Part 2)

/ Laura Tuke / Leave a comment

A holly.tree shining bright with red berries and prickly green leaves in the grey of a wintertime woodland. An ancient evergreen yew standing watch over the final resting place of our ancestors. A colour-changing spindle cream flowered and glossy green in spring, turning to psychedelic pinks and oranges in autumn. Trees come in all shapes and sizes, often differing wildly from each other, but all can be found embedded in the landscape and culture of Britain.

In the last chapter of my How to… Identify British Tree Species guide, I focussed on 10 tree species that can easily be found across the UK, from the majestic oak to the graceful silver birch. These are but a few of the now 80 odd native and non-native species that can be found in the UK. From providing food to flood prevention, from the countryside to the city, trees can be found playing important roles across the country right now.

Following on from my last guide, part 2 covers 10 more tree species that can easily be found across Britain. This handy guide of facts, drawings, and photos is here to help you to identify these species at any time of year. Here’s to learning something new everyday!

Tree Species

Blackthorn (Prunus spinosa)

  • Family: Rose – related to fruiting trees such as cherry and plum
  • Origin: Native
  • Shape and Size: Large shrub, occasionally small tree, up to 4m, forming impenetrable thickets
  • Stems and Twigs: Young twigs downy, maturing to dark brown bark, that shows orange beneath, with thorns
  • Leaves: Small, oval, alternate, tapering to a point, toothed margins, dull above and hairy beneath
  • Flowers: Flowers are white with 5 petals and red-tipped anthers. Flowers appear late March-April, before the leaves, often alongside cold weather known as Blackthorn winter
  • Seeds: Produces round, blue-black fruit (sloes) with a single seed (stone)
  • Range and Habitat: Grows on the edge of scrub woodlands and in hedgerows

In Winter: Twigs are dark and not shiny, with thorns at least 2cm long

Norway Maple (Acer platanoides)

  • Family: Sapindaceae – related to lychee and horse chestnut
  • Origin: Non-native (introduced in the 17th century from Europe and Asia)
  • Shape and Size: Shorter and more slender tree, reaching up to 30m
  • Stems and Twigs: Bark is grey with many small fissures (not flaking), and twigs are slender and brown with tiny white spots
  • Leaves: Thin, light green leaves, opposite and have long pointed lobes
  • Flowers: Erect clusters of pale yellow flowers, before the leaves (April-May)
  • Seeds: Winged keys in opposite pairs
  • Range and Habitat: Increasingly planted and self-sown in parks, gardens, and hedges

In Winter: Distinctive shape and bark, and individual buds that are green and red

Holly (Ilex aquifolium)

  • Family: Aquifoliaceae – holly trees
  • Origin: Native
  • Shape and Size: Narrow-crowned, conical tree with regular branching, reaching up to 20m
  • Stems and Twigs: Bark is green when young, becoming smooth and grey with age
  • Leaves: Alternate, long, glossy, spiny teeth, and waxy on top, matt and pale green beneath
  • Flowers: White, 4-petalled and in close clusters, with male and female flowers on separate trees (May-August)
  • Seeds: Red berries with small seeds, only found on female trees
  • Range and Habitat: Can be found everywhere across the British Isles but prefers drier soils

In Winter: Evergreen spiky leaves and red berries, a symbol of Christmas

Dogwood (Cornus sanguinea)

  • Family: Cornaceae – dogwoods
  • Origin: Native
  • Shape and Size: Tall and deciduous sending out suckers to form dense thickets (up to 10m)
  • Stems and Twigs: Bark grey and smooth with shallow ridges, giving off a fetid smell when bruised, attractive to insects
  • Leaves: Opposite, long, oval, pointed, hairy on both sides, side veins curving forward, and no teeth. Crimson colouring in late autumn
  • Flowers: Greenish-white 4-petalled flowers (June-July)
  • Seeds: Round, bitter, black berries in clusters (sometimes called ‘dogberries’), ripening in August or September
  • Range and Habitat: Frequent in Midlands and South, grows chiefly on chalk soils, but also found in woodlands, scrub and hedges

In Winter: New twigs are bright red

Common Lime (Tilia x europaea)

  • Family: Mallow family – related to trees such as cotton and cacao
  • Origin: Native
  • Shape and Size: Tall tree with long slender branches that start near the ground (up to 40m)
  • Stems and Twigs: Young bark is smooth and grey, whereas old bark is fissured
  • Leaves: Long and heart-shaped with small teeth and tapering to a point. Dark green and hairless above, whereas undersides are paler with white or buff hairs in the vein junctions
  • Flowers: Greenish-yellow 5-petalled flowers that are sweet smelling (late June-July)
  • Seeds: Encapsulated in small round hanging fruits, hairy, faintly ribbed and with pointed tips
  • Range and Habitat: Widespread in rows or avenues in streets, parks and also hedges

In Winter: Red, hairy twigs and shoots

Elder (Sambucus nigra)

  • Family: Adoxaceae – previously in the honeysuckle family , but now reclassified in moschatel
  • Origin: Native
  • Shape and Size: Bushy shrub with many stems or growing into a small tree (up to 10m)
  • Stems and Twigs: Light brown bark is thick, corky, fissured, and strong smelling
  • Leaves: Long, dark green, and opposite, with leaflets in pairs, rounded, stalked and with teeth
  • Flowers: Creamy-white, small, and sweetly fragrant in flat-topped clusters with yellow anthers (May-August)
  • Seeds: Produces a juicy, edible, purplish-black berry
  • Range and Habitat: Widespread and common throughout Britain, particularly flourishing where nitrogen content high

In Winter: Pungent, hollow-stemmed twigs and often dotted with light-brown bumps

Hawthorn (Crataegus monogyna)

  • Family: Rose – related to fruit trees such as apricots and apples
  • Origin: Native
  • Shape and Size: Quick growing, becoming a dense shrub or single stemmed tree (up to 15m)
  • Stems and Twigs: Bark is hairless and greyish-brown, with many small scales and sharp spines
  • Leaves: Alternate, long, toothed, shiny, lobed, and roughly oval-shaped
  • Flowers: Showy white and fragrant (sickly sweet) with 5 petals, and pink or purple anthers (late April-June). Become deep pink as they fade
  • Seeds: Fleshy fruits (haws) turn dark wine-red and contain a single seed
  • Range and Habitat: Widespread and common throughout Britain, in hedges, scrub or woodland margins

In Winter: Spines emerging alongside buds on the twigs

Beech (Fugus sylvatica)

  • Family: Beech – includes chestnuts and oaks
  • Origin: Native
  • Shape and Size: Older trees have a massive, many-branched dome, whereas young trees are slimmer and more conical in outline (up to 36m)
  • Stems and Twigs: Smooth grey bark may break into small squares
  • Leaves: Long, wavy margins, alternate, hairy leaf edges, and shiny green on both surfaces
  • Flowers: Young leaves appear with yellow long-stalked male flowers on tassel-like stalks, and greenish white female flowers (May)
  • Seeds: Four-lobed husk are two triangular nutlets (mast)
  • Range and Habitat: Native in woods in the south, but widely planted elsewhere

In Winter: Often hold on to leaves and have sharply-pointed buds

Spindle (Euonymus europaeus)

  • Family: Staff-vine
  • Origin: Native
  • Shape and Size: Small tree or big bush up to 6m
  • Stems and Twigs: Young, smooth, greenish bark later turns grey
  • Leaves: Light green leaves are opposite, thin, oval-shaped, and pointed, with small finely toothed margins. Turn pinkish-red in autumn
  • Flowers: Small greenish-yellow flowers with 4 narrow petals (May-June)
  • Seeds: Four-lobed seed capsules, which turn a deep pinkish-red when ripe.
  • Range and Habitat: Grows throughout England and Wales, most frequent in the South, but rarer in Scotland and Ireland. Found in woods, scrub, and hedgerows, in particular on lime

In Winter: Buds and twigs are angular with four sides

Yew (Taxus baccata)

  • Family: Yew
  • Origin: Native
  • Shape and Size: Round-headed tree with dark foliage, often has many trunks (reaches up to 20m)
  • Stems and Twigs: Smooth, light brown bark flakes to red patches
  • Leaves: Needles dark green on top and matt yellow-green on underside
  • Flowers: Male and female flowers are found on separate trees. Male flower is yellow, and tiny female flower is green (February-April)
  • Seeds: Bright red ripened fruits, much enjoyed by birds, partially encloses a single seed that is poisonous to humans
  • Range and Habitat: Found in woods, scrub, screes, downs and often on lime

In Winter: Evergreen needle-like leaves present all year round

Drawings are my own work

Spring 2021: How It Happened

/ Laura Tuke / Leave a comment

This spring has been an unexpected, unpredictable and turbulent season, that has taken its time to unfurl. Traditionally spring is a season that is characterised as calm and dry, with days getting longer and warmer, and the potential for cooler nights. As lighter evenings returned this year though, spring was far from traditional, with a stormy then hot March, cold and frosty April, and a wash out of a May.

Since 2017, I have recorded the dates of the events of spring every year, and with the start of my blog, every year since I have analysed and compared spring events to see how the season took form. Last year I showed that the timing of spring events is heavily linked to spring weather, resulting in either earlier or later occurrence accordingly. Over the last couple of years this has varied alot, so it will be interesting to see what has gone on this year.

This spring a lot has been going on for me, but I have still found time to be out in nature as much as possible and to enjoy the time when one season slips into another. It has felt that spring has dragged on longer this year, with the potential effects of spring starting warm and progressing to cold, then wet. So as this spring comes to a gradual close and the heat sets in, it is time to find out what actually went on during spring 2021.

Trees

This year there was a general trend for trees being later in their bud burst, leaves unfurling, and flowering compared to 2020. Even before the frosty nights of April, silver birch (Betula pendula) buds burst 14 days later on 26th March, Norway maple (Acer platanoides) first flowered 5 days later on 26th March, and beech (Fagus sylvatica) buds burst 14 days later on 27th March.

As we moved through April and into May, spring events began to stretch even further in their lateness. For example, wild cherry (Prunus avium) buds burst 35 days later on 8th April, horse chestnut (Aesculus hippocastanum) first flowered 18 days later on 20th April, alder (Alnus glutinosa) buds burst 15 days later on 21st April, the first lime (Tilia x europaea) leaves unfurled 23 days later on 26th April, pedunculate/english oak (Quercus robur) leaves first unfurled 31 days later on 5th May, and ash (Fraxinus excelsior) flowered 37 days later on 9th May.

Field maple (Acer campestre) did not follow this trend though, with bud burst being 10 days earlier on 26th March, and first leaves unfurling 5 days earlier on 1st April. This may be as these trees missed the worst of the spring weather, but for the other trees spring events ranged from being 1 to 37 days late!

Shrubs

For a lot of the shrub species I monitored a similar trend was shown as with tree species, being later compared to 2020. For example, elder (Sambucus nigra) leaves first unfurled 34 days later on 18th March, blackthorn (Prunus spinosa) first flowered 17 days later on 23rd March, and hawthorn (Crataegus monogyna) first flowered 23 days later on 11th May.

Though half of the shrubs I monitored were later in their spring events, ranging anywhere from 2-34 days later, two species did not completely fit this trend. For lilac (Syringa vulgaris) bud burst occurred 12 days earlier on 24th February, but flowered 17 days later on 2nd May. This was the same for dog rose (Rosa canina), where buds burst 12 days earlier on 22nd February, but first flowered 22 days later on 8th June. For both of these species though, it is the spring events occurring before April that are earlier, as the ones occurring in April and May were not immune to the frosts and heavy rainfall like the other shrubs.

Flowers

For many of our commonly associated spring flower species, there was a little more of a split between appearing earlier or later, but on average they flowered later compared to 2020. Snowdrops (Galanthus spp.) first flowered 15 days later on 18th January, wood anemones (Anemone nemorosa) 8 days later on 30th March, bluebells (Hyacinthoides non-scripta) and greater stitchwort (Stellaria holostea) both 4 days later on 1st April, cowslips (Primula veris) 12 days later on 2nd April, early purple orchid (Orchis mascula) 12 days later on 18th April, wild garlic (Allium ursinum) 14 days later on 20th April, and oxeye daisy (Leucanthemum vulgare) 16 days later on 3rd June.

The exceptions were a section of earlier flowering species, including primrose (Primula vulgaris) first flowering 27 days earlier on 31st December, lesser celandine (Ficaria verna) 3 days earlier on 15th January, daffodil (Narcissus spp.) 22 days earlier on 19th January, and cuckooflower (Cardamine pratensis) 10 days earlier on 8th April. These flowers would have been influenced by a warmer winter and start to spring, generally flowering before the cold spell in April.

Birds

On average, bird species spring events have also become later this year compared to 2020. I heard my first song thrush (Turdus philomelos) singing 17 days later on 1st January, I saw my first rook (Corvus frugilegus) nests being built 10 days later on 25th February, and I heard my first chiffchaff (Phylloscopus collybita) on 16th March. April and May events were again influenced, for example I saw my first swallow (Hirundo rustica) 5 days later on 10th April, saw my first house martin (Delichon urbicum) 9 days later on 21st April, heard my first cuckoo (Cuculus canorus) 3 days later on 1st May, and saw my first swift (Apus apus) 10 days later on 16th May.

There were two exceptions though, where I recorded hearing my first blackbird (Turdus merula) singing 13 days earlier on 10th February, and saw my first blackcap (Sylvia atricapilla) 8 days earlier on 14th April. These would most likely relate to other influencing factors, such as overwintering in the UK or habitat requirements.

Insects

Compared to previous years, I have still yet to see some species of butterfly that would typically be on the wing by now, such as gatekeeper butterflies (Pyronia tithonus). For the insects I have seen though, again there was a split in event occurrence compared to 2020. For example, I saw my first small tortoiseshell butterfly (Aglais urticae) 2 days later on 7th April, red admiral butterfly (Vanessa atalanta) 26 days later on 7th April, brimstone butterfly (Gonepteryx rhamni) 26 days later on 18th April, and speckled wood butterfly (Pararge aegeria) 52 days later on 13th June.

The early emergers came in the form of my first buff-tailed bumblebee (Bombus terrestris) 14 days earlier on 27th February, peacock butterfly (Aglais io) 5 days earlier on 30th March, orange-tip butterfly (Anthocharis cardamines) 13 days earlier on 31st March, and red-tailed bumblebee (Bombus lapidarius) 12 days earlier on 19th April. Despite these species appearing earlier in spring, later flowering plants will have had a knock-on effect for them due to a mismatch in timing for food. Only further down the line will we be able to see the extent of this impact.

Summary

This year I have recorded more spring dates than I have done so before, such as alder trees flowering, first yellowhammer singing, and first green-veined white butterfly, which will be useful information during the years to come. This reflects how I have felt more in touch with nature this year even with the unusual weather patterns, such as alot of rain! It became clear as we went through May though, that there was a trend for events happening later and later. This is why I was so interested to see how far this trend actually extended amongst species.

Last year I wrote that spring events are ‘in fact getting later, which will be related to… weather and environmental factors here and further afield’. This year this has turned out to be the case, which shows how climate change is having more of an impact through changes in weather patterns rather than just warmer temperatures. Earlier spring events have been getting earlier with warmer winters, but heavy rainfall and colder starts to spring have been affecting late March to May events most. I wonder now what impact this might have as we move forward, for example greater mismatches in ecological timings.

How to… Identify British Tree Species

/ Laura Tuke / 1 Comment

A majestic oak standing tall in the landscape, watching as centuries pass it by. A silver birch with drooping branches, embellished with leaves, slowly blowing in the breeze. An alder leaning over the edge of a river, spreading its branches to shade the bank beneath it. From capturing the imaginations of children to symbolising strength and life for adults, trees in all their forms are an important part of the landscape and culture within Britain.

With over 70 species in the UK alone, trees come in all shapes and sizes, and can be found anywhere from our highlands to our cities. Trees colonised Britain following the last glaciation, and have since become intertwined with our very own history. They provide us with so much, including resources, such as medicines and building materials, improved air quality, homes for wildlife, and even cultural services, such as therapy through forest bathing. Thus, they are a very important part of our environment!

Now, as our reliance on trees grows and the threats to them increase, it is surprising how little people know about trees in general. For example, the average Brit is unable to name more than five tree species, and a third even believe a money tree is a real species! With two thirds of the public now wanting to learn a little more about the trees in their area, here’s my handy guide to help you identify 10 common tree species that can be found in the UK.

Tree Species

1. Pedunculate or English Oak (Quercus robur)

  • Family: Fagaceae – related to species such as beech and sweet chestnut
  • Origin: Native
  • Shape and size: Up to 40m tall, upward-reaching and broad crown
  • Stems and twigs: Massive rugged grey-brown trunk
  • Leaves: 10-12cm long, oblong, and lobed, turning brown in autumn
  • Flowers: On the same tree and flowering April-June. Male flowers= yellow-green catkins; female flowers= pinkish and on short stalks
  • Seeds: Produces the familiar acorn, with scaly cups and clusters carried on long stalks
  • Range & habitat: Widespread and common throughout Britain, found in habitats ranging from deciduous and mixed woodlands to open grassland and hedgerows

In Winter: Look for rounded buds that have overlapping scales and are found in clusters at the end of each shoot

2. Sessile oak (Quercus petraea)

  • Differs to Pedunculate Oak in that the leaves taper to an unlobed base and have long stalks.
  • Buds in winter have more scales (more than 20).
  • Also, the clustered acorns are almost stalk-less with downy cups.
  • Narrower in shape, prefers more acid soils, and is more common in the West of Britain.

3. Common Ash (Fraxinus excelsior)

  • Family: Oleaceae – related to olive trees and lilac
  • Origin: Native
  • Shape and size: Tall and domed with widely spaced branches, growing up to 35m
  • Stems and twigs: Bark is pale brown to grey, becoming rugged with age
  • Leaves: Opposite and toothed, with 9-13 stalked leaflets that have long tips
  • Flowers: Male and female flowers typically grow on different trees, but both have purple flowers growing in clusters before the leaves
  • Seeds: Single seeds with a long wing (known as keys)
  • Range & habitat: Woods and hedges, in particular flourishing on a lime-rich/well-drained soil

In Winter: Smooth twigs with distinctive hairless black buds, and ridged bark on adult trees that resembles a diamond pattern

4. Horse Chestnut (Aesculus hippocastanum)

  • Family: Sapindaceae – related to lychee and maples
  • Origin: Non-native (introduced in the 1500s from the Balkan peninsula in southeastern Europe)
  • Shape and size: Arching branches, usually turned up at the ends, growing up to 35m tall
  • Stems and twigs: Bark is scaly and red-brown or dark grey-brown
  • Leaves: Five to seven large, thick, stalkless leaflets with pronounced veins and a long, tapering base
  • Flowers: Showy spike (candle) of white flowers with a yellow to pink spot
  • Seeds: Spiny fruit contains one or more shiny conkers
  • Range & habitat: It has now become a widespread and common sight across Britain, tolerating a wide range of soils

In Winter: Smooth bark and sticky buds

5. Common Alder (Alnus glutinosa)

  • Family: Betulaceae – related to hazel and birches
  • Origin: Native
  • Shape and size: Regular branching and conical shape, growing up to 25m
  • Stems and twigs: Dark brown bark that is often rough and sprouts young shoots
  • Leaves: Alternate, rounded, sometimes notched at the tip, and dark green
  • Flowers: Male and female catkins grow on the same tree, before the leaves. Male catkins= lambs’ tails; female catkins= small and egg-shaped
  • Seeds: Female catkins turn into a small cone, drying from green to brown, releasing the seeds. The seeds have corky outgrowths that keep them afloat on water
  • Range & habitat: Thrives in wet ground and is often seen lining the banks of rivers and streams across Britain

In Winter: Appears dull purplish due to purplish buds

6. Silver Birch (Betula pendula)

  • Family: Betulaceae – related to alders, hazels and hornbeams
  • Origin: Native
  • Shape and size: Erect with pointed crown and drooping branches, reaching up to 30m
  • Stems and twigs: Young bark reddish, maturing to black and papery-white bark. Twigs smooth with small dark bumps
  • Leaves: Alternate, triangular and shiny, on slender stalks. Edges are ragged, with smaller teeth between larger main teeth
  • Flowers: Male catkins= purply-brown; female catkins= smaller and pale green
  • Seeds: Two winged and wind-borne, released in winter
  • Range & habitat: Form natural woodlands on light, dry soils throughout Britain

In Winter: Distinctive shape and bark

7. Sycamore (Acer pseudoplatanus)

  • Family: Sapindaceae – related to maples and horse chestnut
  • Origin: Non-native (introduced from Europe either in the 1500s or by the Romans)
  • Shape and size: Massive domed outline, with dense foliage and heavy lower branches, growing up to 35m
  • Stems and twigs: Grey fissured bark ages to pinkish-brown
  • Leaves: Opposite, five-lobed, and upper side dark green
  • Flowers: Greeny-yellow flowers in hanging clusters appear with the leaves
  • Seeds: Hairless keys in right-angled pairs
  • Range & habitat: Grow vigorously in all parts of Britain, being widely planted on their own for shelter or in woodlands and hedgerows

In Winter: Distinctive shape and bark

8. Wild Cherry (Prunus avium)

  • Family: Rosaceae – related to roses
  • Origin: Native
  • Shape and size: Pyramidal shape, reaching up to 30m
  • Stems and twigs: Shiny, red-brown bark peels in horizontal strips
  • Leaves: Alternate and oval with long points and regular, forward-pointing teeth, and two conspicuous red glands at the top of the stalk
  • Flowers: White flowers (blossom) appear before the leaves in small, loose clusters
  • Seeds: Produces round, red cherries
  • Range & habitat: Native throughout the UK, being found in woodlands and hedgerows

In Winter: Distinctive bark

9. Common Hazel (Corylus avellana)

  • Family: Betulaceae – related to birches, alders and hornbeams
  • Origin: Native
  • Shape and size: Many stems rise from the ‘stool’, which if left uncut can reach 9m
  • Stems and twigs: Bark coppery brown, smooth and tending to peel
  • Leaves: Alternate, almost circular with sawtooth edges, hairy, and soft to the touch
  • Flowers: Male and female flowers found on the same tree. Male= lemon-yellow lambstail catkins; Female= tiny buds with red tassels
  • Seeds: An edible nut encased in a thick-green husk, ripening in autumn
  • Range & habitat: Grows throughout Britain, often found in woods, scrub areas, and hedges

In Winter: Distinctive shape and bark, accompanied by the male catkins from December

10. Field Maple (Acer campestre)

  • Family: Sapindaceae – related to lychee and horse chestnut
  • Origin: Native
  • Shape and size: Round-shaped tree with branches that droop at the end, growing up to 26m
  • Stems and twigs: Bark is grey or light brown and twigs downy, later corky
  • Leaves: Emerging leaves have a pinkish tinge, turning dull-green, and are opposite and small, with three main, round-tipped lobes and two smaller basal lobes
  • Flowers: Small yellow-green flowers form erect clusters
  • Seeds: Each pair of seed wings lie in an almost straight line, are often tinged with pink
  • Range & habitat: Frequent in England and East Wales in woods and hedgerows

In Winter: Sinuous trunk and distinctive shape

Drawings and photos all my own

Spring 2020: How It Happened

/ Laura Tuke / Leave a comment

Walking through the trees, in dappled early morning sunlight, through swathes of brilliant blue. Standing rooted to the spot, hearing the first Chiffchaff, Swallow, Cuckoo. Sitting in breezy sunshine, learning to identify Hawkbits, Vetches and Viper’s-Bugloss. These are just some of the highlights of my spring this year, wild and full of life. With each new day, there was a new wild highlight to be had.

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Following on from my post last week about my favourite photos from this spring (check out Spring 2020: In Photos), I wanted to continue celebrating the lifeline that has been spring and the natural world for me during lockdown. This week I am looking at how spring unfolded this year in my local area and how it looked now the summer is hitting our shores.

Since 2015 I have been writing down a lot of my observations about spring each year. This means I can now look at spring 2020 in light of how the last few years have actually looked and see if anything interesting comes up. Last year I did this in more detail, so for that check out my post called: How Spring Happened 2017-2019.

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So, did a favourite of my mum’s, the Chiffchaff, return by Mother’s Day this year? Did the Oak burst into leaf before the Ash (and so are we in for a splash)? And did the song of the Cuckoo return to my family’s land for another year? As spring now slips into summer, it is time for me to reflect on an extra special spring.

Trees

One of the very first trees to start showing signs of life each spring at my home in Dorset, is the Horse Chestnut (Aesculus hippocastanum). This year the first buds burst on the 18th of February, which shows a gradual shift forwards over the last few years, being 6 days earlier than last year, and a month earlier than 2018. The first leaf then unfurled on the 10th of March (9 days later than 2019), followed by the first flowers on the 2nd of April (13 days earlier than 2019).

Due to a cold start to spring and a very wet winter, which left the ground cold and waterlogged, Pedunculate (English) Oaks (Quercus robur) were late to make a start, with the first budburst seen on the 2nd of April, 37 days later than 2019. They got going quickly though, with leaves bursting forth by the 8th of April (4 days earlier than 2019) and flowers blooming by the 12th of April (13 days earlier than 2019).

Despite the ground, the trend this year was towards earlier budburst, first leaves and first flowers. Silver Birch (Betula pendula) buds burst on the 15th March, 15 days earlier than 2019; Ash (Fraxinus excelsior) flowered on the 2nd of April, 18 days earlier than 2019; Field Maple (Acer campestre) buds burst on the 5th of April, 13 days earlier than 2019. Grey Willow (Salix cinerea) bucked the trend though, first flowering on the 24th of February, later than last year by 10 days.

This year I added Alder (Alnus glutinosa), Beech (Fagus sylvatica), Lime (Tilia x europaea), Wild Cherry (Prunus avium), and Norway Maple (Acer platanoides) to my spring records, but I did not make observations for Sycamore as in previous years. Lime buds burst on the 14th of March, followed by the first leaf on the 3rd of April; Wild Cherry buds burst on the 15th of March, followed by the first leaf 1 month later and first flower 15 days after that; Norway Maple first flowered on the 21st of March; Alder buds burst on the 6th of April; and Beech buds burst on the 10th of April.

Shrubs

Hazel (Corylus avellana) is one species that flowers early in the year, providing a first hint of colour in a wintry landscape. This year I first saw the male catkins on the 8th of January, followed by the female red flowers on the 1st of February (5 days later than 2019). The first hazel leaf then unfurled 43 days later on the 14th of March.

Blackthorn (Prunus spinosa) is another species that flowers before it produces its leaves, cloaking hedgerows in drifts of snowy white and accompanying a ‘blackthorn winter’ in early spring. This year the first flowers burst open on the 6th of March, 5 days later than last year, but 24 days earlier than 2018.

After the early flowering species have brought colour to our countryside, Hawthorn (Crataegus monogyna) is one of the first shrubs to burst into leaf in the hedgerows. This year its buds first burst on the 2nd of March, 5 days later than 2019, followed by the first leaf unfurling 10 days after (28 days earlier than 2019). Their flowers then followed a month after, on the 18th of April, 10 days earlier than 2019.

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A similar trend was shown with Lilac (Syringa vulgaris), where budburst took place on the 8th of March, 13 days later than 2019. The first leaf then unfurled 3 days later too, on the 25th of March, and the first flowers bloomed on the 15th of April, 7 days earlier than 2019.

The flowers of Elder (Sambucus nigra) are well known and iconic in our countryside, popular for making elderflower cordial. This year Elder flowered early, with the first flowers being seen at home on the 25th of April (22 days earlier than 2019). Just like Elder, the Dog Rose (Rosa canina) is another late bloomer, which opened its petals for the first time on the 17th of May this year (11 days earlier than last year).

Flowers 

The very first flowers to be seen blooming in the countryside is the dainty snow white Snowdrop (Galanthus spp.). Over the last few years the drooping heads of snowdrops have been flowering earlier each year. This year though, it appeared only 1 day earlier than 2019, welcoming in the year on the 3rd of January.

Snowdrops were soon followed by other iconic spring species, in the form of the first Lesser Celandine (Ficaria verna) on the 18th of January (44 days earlier than 2019), the first Primrose (Primula vulgaris) on the 27th of January (8 days earlier than 2019), and the first Daffodils (Narcissus spp.); on the 2nd of February (the same day as last year!).

As spring went on, the Snowdrops and sunshine yellows were joined by Wood Anemones (Anemone nemorosa) on the 22nd of March, Bluebells (Hyacinthoides non-scripta) on the 28th of March, Wild Garlic (Allium ursinum) on the 6th of April, Cuckooflowers (Cardamine pratensis) on the 18th of April, and Oxeye Daisies (Leucanthemum vulgare) on the 18th of May, all occurring 6-17 days earlier than last year.

This year I also included three new flowering species to my spring records: Cowslips (Primula veris), Greater Stitchwort (Stellaria holostea), and Early Purple Orchids (Orchis mascula). I saw the first Cowslip flower on the 20th of March, the first Greater Stitchwort on the 28th of March, and the first Early Purple Orchid on the 6th of April.

Grasses

This year I was so busy in May and the first half of June that I completely overlooked the flowering of 3 common perennial grass species in my local area: Cock’s-foot (Dactylis glomerata), Timothy (Phleum pratense), and Yorkshire Fog (Holcus lanatus). I did though catch Meadow Foxtail (Alopecurus pratensis) flowering, which first occurred on the 22nd of April (23 days earlier than 2019).

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Birds

With the start of every new year, I begin to keep my eye out for the start of the Rooks (Corvus frugilegus) nesting in the bare and skeletal forms of large oak trees near my home. This year they kept me waiting awhile though, with the first signs of nest building appearing on the 15th of February, 17 days later than 2019.

Unlike the start of the Rooks nesting though, the start of male Song Thrushes (Turdus philomelos) singing crept even earlier than last spring. This was 13 days earlier in fact, with me hearing my first on the 15th of December in 2019! This was not reflected by Blackbirds (Turdus merula) though, as I heard my first male singing on the 23rd of February, 17 days later than 2019.

One of my favourite first signs that spring has begun has to be the return of the Chiffchaff (Phylloscopus collybita). This year they returned to my home in Dorset on the 1st of March, 17 days earlier than 2019.

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The glorious return of the Chiffchaffs were then eagerly followed by the first Swallow (Hirundo rustica) on the 5th of April (1 day later than 2019), the first House Martin (Delichon urbicum) on the 12th of April (12 days earlier than 2019), the first Blackcap (Sylvia atricapilla) on the 22nd of April (11 days later than 2018), and the first Swift (Apus apus) on the 6th of May (19 days earlier than 2018). A Cuckoo (Cuculus canorus) did make its exciting return to my family’s land too, which I heard for the first time on the 28th of April (24 days earlier than last year).

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Insects 

This year the majority of the insects I observed, emerged later than they did last year in 2019. I saw my first Brimstone Butterfly (Gonepteryx rhamni) on the 24th of March, my first Peacock Butterfly (Aglais io) on the 4th of April, my first Small Tortoiseshell Butterfly (Aglais urticae) on the 5th of April, my first Orange-Tip Butterfly (Anthocharis cardamines) on the 13th of April, my first Red-Tailed Bumblebee (Bombus lapidarius) on the 1st of May, and my first queen Wasp (Vespula vulgaris) on the 7th of May, with all ranging anywhere between 4 and 37 days later in date than last year.

The ones that did not follow this pattern though, were the Speckled Wood Butterfly (Pararge aegeria) first seen on the same day as last year on the 22nd of April, and the Red Admiral Butterfly (Vanessa atalanta) that was first seen 29 days earlier on the 22nd of April. This year I also added Buff-Tailed Bumblebee (Bombus terrestris) to my observations, seeing the first at home on the 13th of March.

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This Year

This year it has definitely been an interesting and joyful experience to watch how spring unfolded. It started with early signs during the winter, before arriving with a blaze of glory in March.

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This last winter was a warm, wet and windy one, which left the ground cold and waterlogged for quite a while into spring. A number of species such as Oak trees struggled with this, but for many it did not stop them from emerging on time or earlier, such as snowdrops and field maples. This variation continued with bird species, some arriving and beginning breeding earlier and some later. For a lot of the insect species though, they emerged late, which will have had a lot to do with the less than ideal weather conditions this spring, for example frosts in April. Thus, how spring is changing year-to-year definitely has a lot to do with changing weather conditions.

So as spring fades to summer heat, I can now say that the Chiffchaff made its return to the British Isles by Mother’s Day, the Oak burst into leaf before the Ash (and so we are in for a splash!), and a Cuckoo made its return to my home. It has definitely been a great spring this year!