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Posts by Kevin Walker

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65 years of natural colonisation and natural woodland expansion at Monks Wood. Entirely self-sown by Jays, thrushes & wind; zero management: no planting, thinning or fencing. Oak-Ash canopy and Hawthorn-Blackthorn understorey dominate. Roe deer, Muntjac, Grey Squirrels haven't inhibited it.

1 day ago 93 15 1 3
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Two of Ingleborough’s finest flowers from today: Bird’s-eye Primrose Primula farinosa just coming into flower and a very early flowering Yorkshire Sandwort Arenaria norvegica subsp. anglica. Both on Sulber Pasture with Ingleborough brooding in the background.

4 days ago 38 7 0 0
Fritillaria meleagris naturalised at Aubert Ings SSSI near to Cattal

Fritillaria meleagris naturalised at Aubert Ings SSSI near to Cattal

Tulipa syvestris naturalised on the bank of the River Nidd at Aubert Ings SSSI Cattal

Tulipa syvestris naturalised on the bank of the River Nidd at Aubert Ings SSSI Cattal

Dead stem of Heracleum mantegazzianum

Dead stem of Heracleum mantegazzianum

Seed of Heracleum mantegazzianum

Seed of Heracleum mantegazzianum

Annual pilgrimage to count Fritillaria meleagris at Aubert Ings SSSI, Cattal where it appeared c25 years ago. Numbers now c250. Tulipa sylvestris seems to be spreading too as has the statuesque Heracleum mategazzianum which is now well established all along the River Nidd downstream of Knaresborough

2 weeks ago 22 2 0 0
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As we were passing Wordsworth’s Point on Ulswater today we thought it would be rude to not stop and pay our respects to the Wild Daffodils (Narcissus pseudonarcissus). And a few nice ones in the cottage we were staying in too…

2 weeks ago 17 1 0 0
A view through blossoming fruit trees towards an old stone farmhouse built of mellow Oxford Stone. In the pearly sky the first swallows dart about.

A view through blossoming fruit trees towards an old stone farmhouse built of mellow Oxford Stone. In the pearly sky the first swallows dart about.

In the orchard
Artist: CF Tunnicliffe
(The Farm, 1958)

2 weeks ago 284 47 2 2
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Country diary: The rise of the rare pasqueflower is my Easter miracle | Nic Wilson Therfield Heath, Hertfordshire: Soft and felty beyond belief, these springtime tremblers are also highly scarce – yet here are tens of thousands of them

What a joy to celebrate the county #flower of #Hertfordshire in my @theguardian.com country diary today.

#naturewriting #countrydiary

2 weeks ago 78 25 8 1
Purple Toothwort Lathraea clandestina by the Oak Beck Harrogate. A parasite of roots of trees, in this case Salix x fragilis

Purple Toothwort Lathraea clandestina by the Oak Beck Harrogate. A parasite of roots of trees, in this case Salix x fragilis

Caucasian Pennycress Pachyphragma macrophyllum along the Oak Beck Harrogate where it originated from RHS Harlow Carr

Caucasian Pennycress Pachyphragma macrophyllum along the Oak Beck Harrogate where it originated from RHS Harlow Carr

American Skunk-cabbage by the Oak Beck, Harrogate. This originated from RHS Harlow Carr

American Skunk-cabbage by the Oak Beck, Harrogate. This originated from RHS Harlow Carr

Paper in British and Irish Botany on the waterborne spread of ornamental plants from RHS Harlow Carr

Paper in British and Irish Botany on the waterborne spread of ornamental plants from RHS Harlow Carr

Some non-natives along the Oak Beck, Harrogate yesterday: Purple Toothwort, Caucasian Pennycress, and American Skunk-cabbage. These spread along streams from RHS Harlow Carr. Our paper in British & Irish Botany discusses their spread and implications for management of invasives in gardens.

3 weeks ago 19 3 1 1
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Definitely a more dynamic system! We saw 100s of metres of snuffle lines in a wood in Norfolk…

4 weeks ago 2 0 0 0

Lovely!

4 weeks ago 4 0 1 0
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Country diary: A riverside walk reveals the city’s history written in plants | Susie White Lower Ouseburn, Newcastle upon Tyne: Under boardwalks, in concrete, on window ledges, seeds borne by water and carried on feet survive

In today's @theguardian.com country diary, Susie White checks out Newcastle's urban plants with James Common, whose new book - Urban Flora of Newcastle and North Tyneside - is out today! commonbynature.com/urban-flora-...

@bsbibotany.bsky.social #countrydiary #naturewriting

1 month ago 37 12 1 1

Take some climbing ropes. It’s very steep and slippy!

1 month ago 4 0 2 0

Doesn’t seem to be as it completes its lifecycle before the Impatiens takes off. My observations along the Ure suggest that it is usually in areas where the Impatiens has to recolonise due to flooding so keeps its numbers down although obvs it may have simply gone from majorly infested areas

1 month ago 1 0 0 0

Here in Yorkshire we’re about 2-3 weeks away from flowering

1 month ago 3 0 1 0
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Yellow Star-of-Bethlehem Gagea lutea along the River Ure yesterday for #WildflowerHour

1 month ago 68 7 1 0
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In London for a few days a bumped into Mediterranean (Roman) Nettle Urtica membranacea in Walthamstow. Not a species I’ve seen before but unmistakable with those long linear inflorescences! #urbanbotany

2 months ago 31 0 1 2

I noticed that too. Mackenzie Crook is a birder / really good bird artist with a nice picture in the BTOs Red 65? I wondered about contacting him about doing a follow on based on a botanical club (rather than Detectorists). I wonder which society he might choose? Material would be similar!

2 months ago 4 0 0 0
Snowdrops and crocuses appear through light snow on rocky ground

Snowdrops and crocuses appear through light snow on rocky ground

“Snow has fallen again, as it will sometimes do in February”

What to Look for in Winter, 1959
Artist: CF Tunnicliffe
Writer: EL Grant Watson

2 months ago 372 67 5 3
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To me a more important point about reintroductions is that they shouldn’t divert our ambition/attention from conserving what we’ve already got. That is more mundane day-to-day work/less attention grabbing but absolutely vital not least so introductions have healthy ecosystems in which to thrive.

2 months ago 13 0 0 0

One of best sites I know is a drumlin that was unsuccessfully ‘gripped’ for drainage. SWO regenerated in huge numbers on the overturned mineral soils. Similar habitat on Straloch Moraines in Scotland (but more natural disturbance there)

2 months ago 3 0 2 1

I think maybe a bit more complicated than just grazing. To me this seems more an early successional species adapted to raw mineral soils in the Arctic (moraines, eskers, exposed riverbanks, etc. mires/flushed grassland is the nearest we have these close quickly in absence of disturbance (grazing!)

2 months ago 3 0 1 0

It is an increasing garden escape in northern England and spreading by bulbils along rivers where it can form very dense stands on sandy riverbanks disturbed during winter floods. Along the Oak Beck where this study took place there are 10s of 1000s of plants and it seems to be increasing each year

2 months ago 1 0 0 0

Been listening to Cinder Well all day. The same happened to me with Johnny Flynn and The Detectorists…

2 months ago 1 0 0 0
Aconite-leaved Buttercup Ranunculus aconitifolius along the Oak Beck

Aconite-leaved Buttercup Ranunculus aconitifolius along the Oak Beck

Purple Toothwort Lathraea clandestina

Purple Toothwort Lathraea clandestina

American Skunk-cabbage Lysichiton americanus by the Oak Beck

American Skunk-cabbage Lysichiton americanus by the Oak Beck

Coralroot Cardamine bulbifera by the Oak Beck

Coralroot Cardamine bulbifera by the Oak Beck

The escape of ornamental plants from large gardens can pose a threat to native species and habitats. Here we provide evidence for this in riparian habitats near to Harrogate UK and discuss the lessons for managing potentially invasive species in gardens.

britishandirishbotany.org/index.php/bi...

2 months ago 29 4 2 1
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Biological Flora of Britain and Ireland: Geranium sylvaticum* Geranium sylvaticum is a perennial forb of upland grasslands, woodlands and riverbanks in northern Britain, with scattered native occurrences also in Wales, central England and Northern Ireland. It h...

Our Biological Flora on Wood Crane's-bill is out in @journalofecology.bsky.social. besjournals.onlinelibrary.wiley.com/doi/10.1111/... A team effort w/ @ruthsk.bsky.social @sandravarga.bsky.social @spp-rich.bsky.social @duncanwestbury.bsky.social, irina Tatarenko & artist Lucy Hulmes on pen and ink.

2 months ago 72 24 6 3
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Bishopthorpe Parish Council want to sell a small wildlife oasis hosting rare wildflowers like Yellow Star-of-Bethlehem to a developer. This field belongs to the people of Bish who cherish its wildlife. Please sign this petition to stop them doing this. Thanks 😊 c.org/syGKBRcGBY

2 months ago 374 87 9 6
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Painted in 1913, Paul Nash gave this picture the ultimate simplicity of a title, 'A Drawing.' The elm trees marked the boundary of his family's home at Wood Lane House, Iver Heath in Buckinghamshire. Trees always held a spiritual quality for him.

2 months ago 196 40 1 2

I love that such a rare bird was secondary to the plant!

2 months ago 19 2 0 0
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Male Holly has been flowering here in Northern England for a few weeks; lots of trees have buds that have yet to open. Apparently not uncommon to have a second flowering late in the year but the first time I’ve noticed it

4 months ago 1 0 1 0

Surely ‘normal for Norfolk’? 🤣 That’s a term I use a lot in our household!

4 months ago 1 0 1 0

We're hiring!
Could you help us support & grow the community of botanists across Northern Ireland?
Manage our @daera-ni.gov.uk-funded Botanical Skills Training Project?
Help boost participation in @npms.bsky.social across NI?
Please apply by midnight this Sunday, 21 Sept:
bsbi.org/botanical-sk...

7 months ago 21 20 0 3