Category Archives: London Plants

Wednesday Weed – White Dead-nettle

Every Wednesday, I hope to find a new ‘weed’ to investigate. My only criterion will be that I will not have deliberately planted the subject of our inquiry. Who knows what we will find…..

White Dead-nettle (Lamium album)

White Dead-nettle (Lamium album)

Just when everything else is looking a little exhausted, White Dead-nettle is coming into flower. Was there ever a ‘weed’ with such pure white blossoms, or such tender green foliage? I am not surprised that all manner of Dead-nettles are being bred as garden flowers – here, for example, is Lamium maculatum ‘Roseum’…

By Ghislain118 (AD) http://www.fleurs-des-montagnes.net (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0-2.5-2.0-1.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons

By Ghislain118 (AD) http://www.fleurs-des-montagnes.net (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0-2.5-2.0-1.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons

Here is Lamium maculatum ‘Beacon Silver’….

Lamium_maculatum_'Beacon_silver'

By Ghislain118 (AD) http://www.fleurs-des-montagnes.net (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0-2.5-2.0-1.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons

and, finally, here is a white variant.

By Hedwig Storch (Own work) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons

By Hedwig Storch (Own work) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons

One reason for the growing popularity of Dead-nettle variants is that they are excellent ground cover in shady areas – few plants can survive in dry shade, but this is one family that will often thrive in these conditions. I do wonder, though, if the showier varieties have the delicate elegance of the wild plant. Sometimes, the result of breeding for appearance is the loss of value to wildlife – complicated flowers can make the nectar and pollen less accessible to pollinating insects, and sometimes the amount and quality of the food itself is reduced. However, my good friend Jo who has a pink Lamium variety in her garden tells me that it is very popular with bees, so this is not always the case.

White Dead Nettle 4bWhite Dead-nettle is so attractive to bees that an alternative name is ‘Bee Nettle’. As it blooms right into the heart of the winter, it is invaluable for those mild days when hibernating queen bees pop out to top up their nectar stores. Only a heavy bee is able to open the flower in order to get to the food, so this seems to be a case of convergent evolution, where the shape of the plant has evolved to fit one particular group of pollinators.

Lamium_album4_ies

By Frank Vincentz (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/)], via Wikimedia Commons

Bees are not the only creatures who appreciate White Dead-nettle – it has been used by humans too, both as food (the young leaves can form part of a salad), and has been used for the treatment of catarrh and dropsy.

White Dead Nettle 2cThe name ‘Dead-nettle’ refers to the fact that this plant, although its leaves superficially resemble those of the Stinging Nettle, does not sting. However, as it often grows amongst Stinging Nettles, White Dead-nettle may benefit from the wide berth that its more assertive relative is given by some grazing animals and insect pests.

White Dead Nettle 4aAn alternative name for White Dead-nettle is ‘Archangel’. This is said to be because it was said to first come into flower on 8th May, St Michael’s day. However, I can’t help but think that it is because of the glowing white of its flowers, and their ethereal shape. Of all the ‘weeds’ that I’ve reported on so far, this one feels to me like the most angelic.

Lamium_album_ENBLA03

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The Most Unpopular Tree in Britain?

Sycamore (Acer pseudoplanatus) leaves with Tar Spot (Rhytisma acerinum) fungus

Sycamore (Acer pseudoplanatus) leaves with Tar Spot (Rhytisma acerinum) fungus

When I was walking through Cherry Tree Wood last week I noticed, in amongst the Hornbeam and the Oak, a solitary Sycamore tree. As is usual in these parts, the leaves were covered in the round black scars of Tar Spot fungus, which occurs mostly when the tree is young and shaded by older plants. The fungus makes the leaves look as if a Frost Giant has squeezed each one between an icy finger and thumb. It is almost as if the tree is being punished for its very existence, because the more I read about Sycamore, the more I realise how unpopular it is.

Sycamore 12Sycamore is a member of the Maple family, as its leaf shape shows. At the moment, it is classified as a neophyte, which means a plant that was introduced after 1500. However, there is a name for the Sycamore in Scottish Gaelic (‘Fiorr chrann’) which suggests that the tree was present much earlier than that. However long it has been here, it is a prolific self-seeder, and if you want an instant forest in your back garden, there is a good chance that Sycamore will oblige.

Sycamore 'Helicopters' (By Didier Descouens (Own work) [CC-BY-SA-4.0 (http://creativecommons.org/licenses/by-sa/4.0)], via Wikimedia Commons)

Sycamore ‘Helicopters’
(By Didier Descouens (Own work) [CC-BY-SA-4.0 (http://creativecommons.org/licenses/by-sa/4.0)], via Wikimedia Commons)

For me, autumn would not be complete without these little whirligigs spiralling down from the trees like some kind of James Bond flying device. But it’s safe to say that not everyone shares my enthusiasm. Take John Evelyn, seventeenth century writer, for example:

” The Sycamor…is much more in reputation for its shade than it deserves: for the Hony-dew leaves, which fall early …turn to a Mucilage and noxious insects, and putrifie with the first moisture of the season: so as they contaminate and marr our Walks; and are therefore by my consent, to be banish’d from all curious Gardens and Avenues.” (Quotation from Flora Britannica by Richard Mabey).

This ‘mucilage’ is likely to be the main culprit for the problem of ‘leaves on the line’, which slows up trains every autumn. And the ‘Hony-Dew’ is produced by the extraordinary number of aphids who feed on the tree. The combination of the two can drive gardeners to distraction. Take this posting to the RHS website for example:

“It rains leaves and now sap and insects of all kinds emerge from it. The sap is everywhere and makes all the garden furniture sticky. Birds roost in it and we have piles of you know what everywhere. So bad now that my grandson is not allowed to play in the garden as its just a smelly, sticky nightmare!”

Oh dear. I can see why the Sycamore is not everybody’s favourite.

However, it can be a truly magnificent tree, growing up to 35 metres tall and living for 400 years. The Martyrs’ Tree in Tolpuddle, Dorset, is a Sycamore. In the 1830’s the local farm labourers used to meet under its branches, and formed the first agricultural labourer’s union in England, subsequently being transported to Australia for their pains. It is said that George Loveless, their leader, took a leaf from the tree with him, pressed between the pages of his Bible.

The Martyrs Tree at Tolpuddle, Dorset (Simon Palmer [CC-BY-SA-2.0 (http://creativecommons.org/licenses/by-sa/2.0)], via Wikimedia Commons)

The Martyrs Tree at Tolpuddle, Dorset (Simon Palmer [CC-BY-SA-2.0 (http://creativecommons.org/licenses/by-sa/2.0)], via Wikimedia Commons

The insects complained about by the gardener above are, for me, one of the Sycamore’s strong points. Where there are aphids there will be lacewings and ladybirds, blue tits and bats. Richard Mabey points out that the Sycamore has the highest insect productivity by weight of any common tree: 35.8 grams per square metre, compared with 27.76 grams for Oak. This is especially useful in urban areas, where alternative sources of insect food might be hard to come by for airborne feeders such as House Martins and Swifts.

In the spring, the flowers are a good source of nectar and pollen for all manner of pollinating insects.

Sycamore Flowers (Albert Bridge [CC-BY-SA-2.0 (http://creativecommons.org/licenses/by-sa/2.0)], via Wikimedia Commons)

Sycamore Flowers (Albert Bridge [CC-BY-SA-2.0 (http://creativecommons.org/licenses/by-sa/2.0)], via Wikimedia Commons)

The leaves are also food for a variety of moths.

Caterpillar of the Sycamore Moth(Acronicta aceris) (By Anagoria (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-3.0 (http://creativecommons.org/licenses/by/3.0)], via Wikimedia Commons)

Caterpillar of the Sycamore Moth(Acronicta aceris) (By Anagoria (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-3.0 (http://creativecommons.org/licenses/by/3.0)], via Wikimedia Commons)

The Plumed Prominent moth (Ptilophora plumigera) (By Gyorgy Csoka, Hungary Forest Research Institute, Bugwood.org [CC-BY-3.0-us (http://creativecommons.org/licenses/by/3.0/us/deed.en)], via Wikimedia Commons)

The Plumed Prominent moth (Ptilophora plumigera) (By Gyorgy Csoka, Hungary Forest Research Institute, Bugwood.org [CC-BY-3.0-us (http://creativecommons.org/licenses/by/3.0/us/deed.en)], via Wikimedia Commons)

In Wales, the wood of the Sycamore is used to make a Love Spoon, which is normally carved from a single piece of wood by a young man to give to his beloved. This was an indication to the bride-to-be’s father that the suitor was competent at woodworking, and was therefore likely to be a good provider, plus the time and effort involved indicated that the lover was serious, not some Jack-the-Lad.

A Love-spoon (By José-Manuel Benito (Own work) [Public domain], via Wikimedia Commons)

A Love-spoon (By José-Manuel Benito (Own work) [Public domain], via Wikimedia Commons)

For some people, the Sycamore is a ‘weed’, the only tree, to my knowledge, to be labelled in this way. Its ‘alien’ origins, its profligacy, its ‘slimy’ leaves and its way of attracting insects have led to a very British disdain. Poppycock, I say. We should be proud of this magnificent tree, and grateful for its shade, its generosity, its graceful flowers and its helicopter seeds. We need more sturdy, long-lived trees like the Sycamore. They help to prevent flooding by soaking up excess water. They purify our air and help to reduce the heat of the city. And with their lifespans of hundreds of years, they provide a way of both remembering our personal transcience and linking us to the history of those who went before us.

 

 

 

 

Wednesday Weed – Cleavers

Every Wednesday, I hope to find a new ‘weed’ to investigate. My only criterion will be that I will not have deliberately planted the subject of our inquiry. Who knows what we will find…..

Cleavers (Goosegrass) - Gallium aparine

Cleavers (Goosegrass) – Gallium aparine

It is always a pleasure to welcome a representative of  a new plant family to The Wednesday Weed. This week’s star is Cleavers, also known to me as Goosegrass and, when I lived in Dundee, as Sticky Willie. I found it growing in a neglected but fruitful flower bed at the top of Park Hall Road, and was delighted to find that it was in flower in the middle of November.

The four-petalled flowers of Cleavers seem to blossom at any time of year (By Fornax (Own work) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons)

The four-petalled flowers of Cleavers seem to blossom at any time of year (By Fornax (Own work) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons)

Cleavers is a member of the Bedstraw family, which includes a host of small-flowered scrambling plants. The name comes from the medieval use of the plants as bedding material, and Cleavers was used as part of the mixture because the tiny hooks that cover the plant held the contents together, ensuring that the ‘mattress’ thus created didn’t become too lumpy and bumpy.

Cleavers 1As a child, I remember that I delighted in attaching this plant to my long-suffering brother when he wasn’t looking. The sticking-power of this plant is very satisfying, especially if the victim is wearing a woolly jumper or a duffle coat. Indeed, I would sometimes manage to cover my sibling in so much Cleavers that from the back it looked as if Birnam Wood was once again on its way to Dunsinane. Forty-five years later, I am still waiting for the retribution that will surely come my way for such silliness.

Cleavers 3Cleavers is a plant of many, many uses.  When I was in Scotland, we would gather armfuls of Goosegrass to feed to the ducks, geese and chicken that we raised on a city farm. And in Plants Britannica, Richard Mabey describes how a combination of nettles and Herriff (yet another name for Cleavers) was used to make a beverage that resembled ginger beer.

Mabey also relates how the fruits of Cleavers were used by the lacemakers of Bedfordshire to cover the pinheads on their lacemaking cushions.

The fruits of Cleavers

The fruits of Cleavers

In spite of its hairiness, Cleavers is said to be edible if cooked before the flowers appear. But even more astonishing is the fact that Cleavers is in the same family (Rubiaceae) as the coffee plant, and the fruits can be used as a coffee substitute, though I suspect that one would need an awful lot to knock up an espresso.

Cleavers 2Cleavers has been used for a host of medicinal uses: it has been a lymphatic tonic, a poultice for leg ulcers and a mild sedative. Its hairy stems have been used as a sieve for milk into recent times in Sweden. And its roots can be used to produce a red dye – according to the Plant Lives website, when birds eat the root of Cleavers, their bones are turned red.

I have been amazed by the sheer variety of ways that this modest little ‘weed’ has been used. Today, I wonder if city children even know that they can use it to torment their brothers and sisters. We are becoming more and more detached from the world around us, but it doesn’t have to be that way. The plants are still here, just waiting to be noticed.

 

 

 

Wednesday Weed – Sweetbriar

Every Wednesday, I hope to find a new ‘weed’ to investigate. My only criterion will be that I will not have deliberately planted the subject of our inquiry. Who knows what we will find…..

Sweetbriar (Rosa rubiginosa) hips

Sweetbriar (Rosa rubiginosa) hips

When I first decided to write the Wednesday Weed, I must confess that I had not given much thought to what would happen in winter, when very few plants are flowering, and many have disappeared altogether. Today, I walked around Coldfall Wood with a heavy heart, looking at the Brambles  and the Ivy   that I have already written about, and wondering what I would find that would be interesting. In some desperation, I slipped along the muddy path into the Cemetery  and realised that there was enough inspiration here for the whole of the winter and beyond.

Autumn in Coldfall Wood 039Tumbling over one of the gravestones was a shrub of Sweetbriar (Rosa rubiginosa). It had no flowers, and barely any foliage, and yet the hips were characteristic – they have very long sepals (the dangly bits at the bottom of the fruit), and when viewed from below, the hips look a little like a cone-headed alien parachuting to the ground.

Hip of Sweetbriar viewed from below (By Schnobby (Own work) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons)

Hip of Sweetbriar viewed from below (By Schnobby (Own work) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons)

According to Harrap’s Wild Flowers, there are glands on the stems and leaves which give off a ‘delicious apple-and-cinnamon scent’. How I wished I’d thought to test this out! I will make a return visit soon to see if the plant retains its perfume this late in the year.

Sweetbriar flowers in June and July, and its blossoms are much pinker than those of the commoner Dog Rose.

Sweetbriar with beetle visitor (By Meneerke bloem (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0-2.5-2.0-1.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons)

Sweetbriar with beetle visitor (By Meneerke bloem (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0-2.5-2.0-1.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons)

Sweetbriar is the Eglantine of Shakespeare and other early poets, who often contrasted its sweetness with the sharpness of its thorns, as in this poem by Richard Herrick (1591 – 1674).

The Bleeding Hand

From this bleeding hand of mine,
Take this sprig of Eglantine:
Which, though sweet unto your smell,
Yet the fretful briar will tell,
He who plucks the sweets, shall prove
Many thorns to be in love.

In Shakespeare’s A Midsummer Night’s Dream, however,  the plant is all drowsy seductiveness:

“I know a bank where the wild thyme blows,
Where oxlips and the nodding violet grows,
Quite over-canopied with luscious woodbine,
With sweet musk-roses and with eglantine.”

Sweetbriar in bloom (By Rosa_rubiginosa_mit_einigen_Knospen.jpg: Sebastian Bieber derivative work: Bff (Rosa_rubiginosa_mit_einigen_Knospen.jpg) [CC-BY-SA-2.0-de (http://creativecommons.org/licenses/by-sa/2.0/de/deed.en)], via Wikimedia Commons)

Sweetbriar in bloom (By Rosa_rubiginosa_mit_einigen_Knospen.jpg: Sebastian Bieber derivative work: Bff (Rosa_rubiginosa_mit_einigen_Knospen.jpg) [CC-BY-SA-2.0-de (http://creativecommons.org/licenses/by-sa/2.0/de/deed.en)], via Wikimedia Commons)

When I was growing up, rose hips, such as those from the Sweetbriar, were a valuable source of vitamin C, and I remember looking forward to my daily spoonful of Delrosa Rose Hip Syrup. Since the 1930’s it had been known that a cup of Rose Hip pulp had more vitamin C than 40 oranges, and during the Second World War, when citrus fruits were difficult to come by, the Ministry of Health instigated a scheme for voluntary collection of the hips. These were turned into syrup, and distributed to small children. Collection continued until the 1950’s, and the syrup was considered a valuable dietary supplement for many years. Plus, unlike many such products, it was delicious. If you would like to learn more (including how to make your own Rose Hip Syrup), I can recommend the Wartime Recipes website – a real delight. Who could resist Patriotic Pudding (key ingredients potato, fat and carrot?)

Autumn in Coldfall Wood 038The one thing that slightly concerns me about finding Sweetbriar in the cemetery is that it shouldn’t really be here. It tends to be a plant of chalky soils, and is not common anywhere. So, could it be that it was planted by a mourner, wanting to honour a loved one by surrounding them with its scent and its pretty flowers? Whatever the reason, its bright hips have brought back a lot of memories for me this morning, and have reminded me that although there is not the abundance of plant activity in autumn and winter that there is in the warmer seasons, there is still lots to observe, if I take the time to notice.

 

What’s Happening to Our Horse Chestnuts?

Horse Chestnut Tree (Sannse at the English language Wikipedia [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/)], via Wikimedia Commons)

Horse Chestnut Tree (Sannse at the English language Wikipedia [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/)], via Wikimedia Commons)

When I was a little girl, we used to go to visit my Auntie Mary, who lived in a Home in Chingford. Auntie Mary had a learning disability, which my great-grandmother always swore was the result of Mary hitting her head on a kerbstone when she was a child, but by the time that I knew her, she was in her seventies.  The Home was a grand house in its own grounds, but the huge, high-ceilinged rooms always had a faint whiff of boiled cabbage and urine about them. Auntie Mary was a cheerful soul, who loved nothing better than playing ‘Banker’, a card game which involved cutting the pack into piles, and betting on which one would  reveal the highest card when turned over. It could go on for hours.  We would play for pennies, and she almost always won, because in spite of her challenges, Auntie Mary always knew exactly how many coins she had, and had an unerring instinct for which was the winning pile. When she was a young girl and was sent out to do the errands, she always knew when people were trying to cheat her, even though she was able to do little about it.

Conkers (By Solipsist (Own work) [CC-BY-SA-2.0 (http://creativecommons.org/licenses/by-sa/2.0)], via Wikimedia Commons)

Conkers (By Solipsist (Own work) [CC-BY-SA-2.0 (http://creativecommons.org/licenses/by-sa/2.0)], via Wikimedia Commons)

My younger brother and I loved Auntie Mary, with her institutional hair cut and toothless grin, but the place itself scared us. We didn’t understand why someone was always screaming, or why there was an old lady sitting in an armchair, a white strand of spittle dangling from the corner of her mouth. And when things got too much, Dad would take us outside. In the grounds was the most magnificent Horse Chestnut tree. In the winter, there would be conkers. In the summer, the tree would be full of blossom, looking like a Christmas tree covered in candles.

Horse Chestnut blossom 'Candles' - via Wiki, attribution uncertain.

Horse Chestnut blossom ‘Candles’ – by Karel Jakubec.

Horse Chestnut blossom (By William N. Beckon (Own work) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons)

Horse Chestnut blossom (By William N. Beckon (Own work) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons)

Poor Auntie Mary, who never asked for a single thing out of life except for the occasional card game and a hug from my father (who she doted on), died unexpectedly following complications from a cataract operation. I never see a Horse Chestnut tree without thinking of her, and so I have been horrified at the state of many of the Horse Chestnut trees that I’ve observed over the past few years. Here, for example, is one that grows just inside Coldfall Wood in East Finchley.

Horse Chestnut in Coldfall Wood

Horse Chestnut in Coldfall Wood

The leaves of the tree have not just turned brown, they have turned to a crisp. Furthermore, although we are now in November, this has been happening for months. Let’s have a closer look at the leaves of another Horse Chestnut that I found further into the wood:

Horse Chestnut Ivy 005Horse Chestnut trees are under siege from several directions. The first is via a fungus called Guignardia aesculi, which was first reported in 1935. It first appears in June, and causes blotches which are often outlined in yellow, as in the leaves above. However, the trees have largely learned to live with this fungus. The real problem is a more recent invader.

Leaf showing infestation by Horse Chestnut Leaf Miner

Leaf showing infestation by Horse Chestnut Leaf Miner

Horse Chestnut Leaf-miner, Cameraria ohridella, first arrived in the UK in 2002. It is a micro-moth, and its caterpillars burrow between the layers of the leaf, usually between the veins – in the photo above, you can see that the leaves have become transparent, with a little black blob indicating a pupa. The new moths emerge in May. The infestation starts at the bottom of the tree and spreads up, causing the leaves to shrivel and turn brown. This leads to early leaf fall. Although this is not fatal, it makes the trees unsightly, and greatly shortens their period of leaf growth. As if this was not enough, the size of the nuts is also reduced, disappointing any children old-fashioned enough to like a game of conkers alongside their online activities.

Adult of Cameraria ohridella. Taken by Soebe in Northern Germany and released under GNU FDL.

Adult Horse Chestnut Leaf Miner. Taken by Soebe in Northern Germany and released under GNU FDL.

Horse Chestnut Leaf Miner pupa 9By Varel from czech wikipedia (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0-2.5-2.0-1.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons)

Horse Chestnut Leaf Miner pupa 9By Varel from czech wikipedia (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0-2.5-2.0-1.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons)

Horse Chestnut Leaf Miner Caterpillar (By Claude Debrauer (Own work) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons)

Horse Chestnut Leaf Miner Caterpillar (By Claude Debrauer (Own work) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons)

So, what can be done? One thing that many local councils are doing is to gather up the fallen leaves and burn them – this will reduce the number of moth pupae that hatch and produce new moths. Birds, especially tits, have been seen eating the caterpillars, and may be responsible for munching up between two and four percent of the insects.

Blue Tit feeding on Horse Chestnut Leaf Miner caterpillars (By Rafał Konieczny (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-3.0 (http://creativecommons.org/licenses/by/3.0)], via Wikimedia Commons)

Blue Tit feeding on Horse Chestnut Leaf Miner caterpillars (By Rafał Konieczny (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-3.0 (http://creativecommons.org/licenses/by/3.0)], via Wikimedia Commons)

However, the final answer may come from a much smaller predator. There are hopes that parasitoid wasps may find the Horse Chestnut Leaf Miner to their liking, and that they will start to increase their numbers as they discover how much tasty protein is lurking between the layers of the leaves. There is also evidence that some trees have immunity to the Leaf Miner, and suffer to a much lesser extent.

Eulophid (parasitic) wasp attacking a caterpillar (not a Leaf Miner in this case) via Stephen Ausmus at United States Dept of Agriculture.

Eulophid (parasitic) wasp attacking a caterpillar (not a Leaf Miner in this case) via Stephen Ausmus at United States Dept of Agriculture.

The Forestry Commission emphasise that there is no reason to destroy a tree with a Horse Chestnut Leaf Miner infestation – although unsightly, the hope is that gradually a balance between predator, prey and natural immunity will develop. There is some evidence that the degree of parasitism is increasing in areas like London, where the Leaf Miner has been present for the longest time.  In the meantime, we will have to wait, and hope that our Horse Chestnut trees are soon healthy and magnificent again, as they were in the days when Auntie Mary was alive.

Lone Horse Chestnut Tree on the Ashridge Estate  © Copyright Paul Buckingham and licensed for reuse under this Creative Commons Licence

Lone Horse Chestnut Tree on the Ashridge Estate © Copyright Paul Buckingham and licensed for reuse under this Creative Commons Licence

 

 

Wednesday Weed – Ivy

Every Wednesday, I hope to find a new ‘weed’ to investigate. My only criterion will be that I will not have deliberately planted the subject of our inquiry. Who knows what we will find…..

Ivy (Hedera helix)

Ivy (Hedera helix)

Ivy is perhaps the most divisive wild plant in the UK. For some, it is a clambering, entwining seducer, a plant of overweening ambition, capable of pulling the mortar out of brickwork and dragginbg the mightiest Oak to the ground.   For others it’s the most valuable wildlife plant that you can grow, providing nectar and pollen for bees and butterflies and shiny black berries for the birds.

Firstly, Ivy as strangler.

Ivy clambering upwards....

Ivy clambering upwards….

In the photo above, we can see the ambitious roots grappling with the bark of a Hornbeam as the plant reaches for the sky. Whilst Ivy can exist perfectly happily in a sprawl in dense woodland (and it is one of the few plants that will survive where there is very heavy leaf cover), it is also not averse to clambering upwards when it comes into contact with a suitable support. But unless it finds soil or a deep crevice, Ivy will use the object solely as a climbing frame, and is not a parasite.

Robin Cropped!The problem comes when the ivy reaches the top of the tree. Here, it will flourish, and, in a windy spot, the sheer weight of growth can be enough to pull the tree over. In Plants Britannica, Richard Mabey quotes a Dorset man who states that, when clearing ivy from a fallen tree, ‘the weight of the ivy often exceeds the weight of its host’.

Ivy proliferating on a tree - photo by Benjamin Zwittnig under Slovenia Creative Commons licence 2.5

Ivy proliferating on a tree – photo by Benjamin Zwittnig under Slovenia Creative Commons licence 2.5

And yet, I have a sense that something else is going on here. In much plantlore, the bold, straightforward Holly is seen as expressing the male principle, the sinuous, all-encompassing ivy as embodying the female principle . Could some of the hatred of Ivy, of its clinging,nature, be a kind of sublimated misogyny, a fear of fecundity? We are complicated creatures, and our motives are often hidden, even from ourselves.

Ivy has a long connection with alcohol. Because ivy can smother grapevines, it was sometimes seen as being able to cure a hangover through sympathetic magic. Ivy used to be grown over poles as an advertisement for the quality of the wine on sale at a public house – these poles were known as ‘bushes’, hence the phrase ‘good wine needs no bush’. Many pubs, such as the one below, maintain the link with Ivy:

The Ivy Inn, North Littleton  © Copyright Philip Halling and licensed for reuse under this Creative Commons Licence

The Ivy Inn, North Littleton © Copyright Philip Halling and licensed for reuse under this Creative Commons Licence

Furthermore, a bowl made of Ivy wood was said to neutralise the effects of drinking bad wine.

Ivy has a long history, also, as a magical plant, particularly with regard to the protection of domestic animals. In Plants Britannica, Richard Mabey tells how, in the Highlands and Islands, it was plaited into a wreath with Rowan and Honeysuckle to protect the cattle. Animals that have been poisoned by eating Yew or Ragwort are said to eat Ivy when they won’t eat anything else. It is said to tempt a sick ewe to eat after a difficult birth, and to cure eye disease in cattle.

One factor in Ivy’s success is its adaptability. It can form a modest sprawl, it can completely cover a building, or it can change its nature completely and become a shrub. Once Ivy flowers, it becomes a blessing for all kinds of insects when other sources of food are long dead.

Red Admiral

Red Admiral

A different Red Admiral

A different Red Admiral

Bellflower Ivy Street Trees 008

Honey Bee

Hoverfly

Hoverfly

All these creatures were photographed on one sunny afternoon last week, clustering around the Ivy flowers and filling the air with their buzzing. For the Red Admirals, who hibernate, this last food might make the difference between surviving the winter, and dying.

Ivy is also the larval foodplant of the Holly Blue butterfly, another reason for having some in the garden.

By Charlesjsharp (Own work) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons

By Charlesjsharp (Own work) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons

So, Ivy is generous, sometimes to a fault. From a little sunshine and a few soil nutrients, she can cover a fence and provide hiding places for the nests of blackbirds, niches for the webs of spiders, and food for all manner of flying things. I find it difficult not to love a plant that so many creatures find useful.

And in one  way, I have a link with this plant. Ivy is my middle name, and was given to me to honour my paternal grandmother. She was a tough, tenacious individual, bringing up three children single-handedly after her husband was killed during the Second World War. Like her namesake, she clung on in desperate times, and I hope that, if put to the test, I could summon up the indomitable spirit of my grandmother, and of the plant that we are both named after.

 

 

Wednesday Weed – Nipplewort

Every Wednesday, I hope to find a new ‘weed’ to investigate. My only criterion will be that I will not have deliberately planted the subject of our inquiry. Who knows what we will find…..

Nipplewort (Lapsana communis)

Nipplewort (Lapsana communis)

Dear readers, when I was photographing Trailing Bellflower last week, I found this elegant plant growing amongst the nettles in a mysterious  lane that the developers seemed to have overlooked. The long, graceful stems are surmounted by delicate yellow flowers, which seem to balance like trapeze artists.

Nipplewort 4 bp

This is Nipplewort, a native British plant which grows in disturbed land of all kinds. I hadn’t noticed it in East Finchley before, but of course, so many of the Wednesday Weeds were invisible to me before I got my plant-spotting eyes into focus.

The leaves of Nipplewort can be eaten in salads and, along with Chickweed and Shepherd’s Purse, it forms part of the Japanese Festival of Seven Herbs  (Nanakusa-no-sekku), where a porridge of fresh, local plants is eaten on January 7th.

The Seven Herbs

The Seven Herbs (By Blue Lotus [CC-BY-2.0 (http://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons)

Nipplewort got its name from the shape of its closed buds.

The buds look a bit like nipples

The buds look a bit like nipples

There was, in medieval times, a belief that God indicated how a plant should be used by creating a specific ‘sign’ encoded in its leaves or flowers. Hence, Eyebright, which is said to resemble an eye, was used for treating styes and eye infections. This idea is known as the Doctrine of Signatures  – the idea that each plant had a signature that could be read by a herbalist. Because of the resemblance of its buds to nipples, Nipplewort has been used as a treatment for breast ulcers, cracked nipples and for drying up milk.

Nipplewort 7 BPI suspect that ,  although the ‘signature’ was said to come from God, the idea is much more ancient than that, dating back to pre-Christian times, when there was no need for a divine intercessor as the plants could speak directly to us, if we had ears to here.

It seems somehow appropriate that, on this sunny late autumn day, I was looking at a plant that was associated with motherhood. As I took these photos I had no idea that a cloud of troubles was forming overhead, or that by the end of the week I would be sitting at a hospital bed, holding my mother’s hand as she recovers from a stroke which has damaged her eyesight. But it gives me great comfort to think back to that patch of bright yellow flowers, the buzzing of bees in the ivy above, the Trailing Bellflower peeping from under the fence. It reminds me that everything is always in flux, blooming and falling fallow, and that I am part of that process. I need to  bow with the wind, to drink in the sunshine, to accept the dark times and to let go of the delusion that I can control anything important.

Nipplewort (Carl Axel Magnus Lindman [Public domain or Public domain], via Wikimedia Commons)

Nipplewort (Carl Axel Magnus Lindman [Public domain or Public domain], via Wikimedia Commons)

 

 

 

 

 

 

 

 

Wednesday Weed – Trailing Bellflower

Every Wednesday, I hope to find a new ‘weed’ to investigate. My only criterion will be that I will not have deliberately planted the subject of our inquiry. Who knows what we will find…..

Trailing Bellflower (Campanula poscharskyana)

Trailing Bellflower (Campanula poscharskyana)

When I am exploring the half-mile around my house, I am regularly surprised by some new plant that I haven’t noticed before. This week, however, I found a whole new lane that I’d not stumbled across previously, leading from Baronsmere Road to Cherry Tree Wood.

The building development in East Finchley sometimes leaves interesting lanes and snickleways....

The building development in East Finchley sometimes leaves interesting lanes and snickleways….

In this weedy little track, with garden sheds and walls on either side, I found this patch of Trailing Bellflower, with its lilac-blue flowers enhanced by perfect raindrops.

Campanula cropped

Trailing Bellflower comes from the Dinaric Alps – these are the parts of the Alps that were part of the former Yugoslavia, and you can sometimes see the plant referred to as Serbian Bellflower. As we’ve seen before, mountain plants, with their tolerance of poor, thin soil, often do very well in urban environments. This plant is a relatively recent introduction – it first came to the UK in 1931, and was first recorded in the wild in 1957.

Bellflower Ivy Street Trees 001Isn’t it funny how, once you’ve noticed something, you see it everywhere? On a trip to Tufnell Park, I found a patch of Trailing Bellflower peeping out from amongst the ivy.

Bellflower Ivy Street Trees 002The name ‘Bellflower’ doesn’t seem very appropriate for this plant – ‘Starflower’ seems more descriptive of those five-petalled blooms. However, in the photo below, you can see a stem with two flowers on it on the right hand side. Viewed from here, the flowers look like hats for  fairies.

Toilet Insects Campanula Finches Squirrel 030There seems to be some debate as to whether Trailing Bellflower is palatable or not. On the lovely website Plants for a Future the leaves are described as ‘a little tough’, but the flowers ‘have a pleasant sweet flavour and make a decorative addition to the salad bowl‘. They would certainly look very pretty nestled amongst some winter leaves. However, as this is a popular plant with pollinators, and as it flowers later than most, I would be inclined to leave most of the flowers where they belong.

As I left the lane, I spotted another patch of Trailing Bellflower, which had made itself at home amongst the stone stairs of an impressive entrance:

Trailing Bellflower 4aAs I was standing there, an elderly gentleman paused to let me take my photograph.

“Are you interested in Victorian architecture?” he asked.

“Yes,” I said, “but today I’m more interested in the plants”. With a burst of enthusiasm, I explained that this was Trailing Bellflower, and told him probably more than he either wanted or needed to know about the habits, history and ecology of the plant.

He shook his head, a little sadly I thought.

“I see them,” he said, “but I don’t know any of the names”.

You don’t have to know the name of something to appreciate it – in fact, sometimes the urge to identify what a plant or animal is can get in the way of really looking at what you’re seeing. But being able to put a name to a Trailing Bellflower does add a depth, a way of seeing plants both individually and as part of an ecosystem. In fact, my walks to the greengrocer are often now something of a mantra.

“Chickweed, groundsel, shepherd’s purse.

Yellow corydalis, green alkanet, dandelion.

Trailing bellflower, nettle, feverfew.

Canadian fleabane”.

 

 

 

 

 

Wednesday Weed – Chickweed

Every Wednesday, I hope to find a new ‘weed’ to investigate. My only criterion will be that I will not have deliberately planted the subject of our inquiry. Who knows what we will find…..

Chickweed Flower BPWhen I was growing up, we had a blue budgerigar called Fella. He lived in a cage on our sideboard for his entire life. For most of the time, he seemed to be happy enough, as far as we could tell, although I suspect that keeping a single bird when, in his native Australia, he would have been a member of a flock thousands strong was tantamount to cruelty. Still, these were days when most people didn’t think about these things: we did our best to be kind to the animals that we kept, without ever considering whether we should have kept them at all.

Every so often, Fella would flap his wings frantically, sending a cloud of feathers and bird shit all over the carpet and driving the dog into a frenzy of barking.

‘He’s having a mad half-hour’, we would say, trying to shush the dog and sweep up the debris.

But what I remember is that occasionally, I would bring Fella some Chickweed from the garden. I remember the tilt of his head as he pulled it through the bars, the look of concentration on his face as he peeled off the leaves, the way that he used his beak with great gentleness and delicacy.  In such a stultifying life, I wonder if the Chickweed was a highpoint, something that gave him a sense of the world outside the bars, a tiny piece of the wild that he would never experience.

Chickweed (Stellaria media)

Chickweed (Stellaria media)

The Chickweed is coming into flower again at the bottom of the street trees on my road. It forms a kind of green ruffle, covering the chicken bones from the KFC and the cigarette ends. The leaves are so green, the flowers so tiny and star-like that it seems like a last taste of spring in the midst of October. The plant is a member of the same family as Ragged Robin and Red Campion, and, as you might expect from its name, it is popular with chickens as well as budgerigars.

In the spring, Chickweed is considered good eating by humans too, and may turn up amongst the salad leaves at fancy restaurants. It’s also the foodplant of the caterpillars of this beautiful moth:

Yellow Shell moth (Camptogramma bilineata) "Camptogramma bilineata" by Eric Steinert - photo taken by Eric Steinert near Munich, Germany. Licensed under Creative Commons Attribution-Share Alike 3.0 via Wikimedia Commons - http://commons.wikimedia.org/wiki/File:Camptogramma_bilineata.jpg#mediaviewer/File:Camptogramma_bilineata.jpg

Yellow Shell moth (Camptogramma bilineata) “Camptogramma bilineata” by Eric Steinert – photo taken by Eric Steinert near Munich, Germany.

Chickweed also has a reputation for being an anti-inflammatory, especially when turned into an ointment. The water in which Chickweed has been boiled is said, when sipped, to be a cure for obesity, and can also help with the symptoms of rheumatism.

In her wonderful website Plant Lives, Sue C.Eland describes how Chickweed undergoes what is known as ‘The Sleep of the Plants’ – at night, the leaves curl over any new shoots to protect them from the cold, like a chicken snuggling her chicks under her wings.

Chickweed 2 BPChickweed also has a line of hairs on its stem that all point in one direction. These channel dew into a pair of leaves where the water is absorbed and helps to hydrate the plant in times of drought – as the plant often grows in exposed, disturbed areas, this extra fluid must be very useful.

You can just make out the hairs on the stem in this lovely shot by By Kenraiz Krzysztof Ziarnek (Own work)

You can just make out the hairs on the stem in this lovely shot by By Kenraiz Krzysztof Ziarnek (Own work)

As we go on this journey of exploration together, I am constantly surprised by the memories that these plant and animal companions unearth, and  what a new dimension being aware of them brings to my life. Going to the shops means pausing to see what is growing, and often involves a quick about-turn to collect a camera or a plant guide. Having a conversation with a neighbour may mean suddenly swivelling on a heel to watch an unfamiliar flock of birds pass overhead. The flora and fauna  that surrounds me is giving me roots, helping me to find my home here. The least I can do is to acknowledge and to celebrate them, in all their surprising and inspiring variety.

 

 

 

Wednesday Weed – Yellow Corydalis

Every Wednesday, I hope to find a new ‘weed’ to investigate. My only criterion will be that I will not have deliberately planted the subject of our inquiry. Who knows what we will find…..

Yellow Corydalis (Pseudofumaria lutea)

Yellow Corydalis (Pseudofumaria lutea)

Just as the cold nights are coming in,  Yellow Corydalis is putting on a last display of its yellow tubular flowers, which remind me  of the muzzles of Chinese dragons. It grows very happily in this dark corner, and the lack of soil seems to present no problem – after all, this is a plant which came originally from the Alps and is therefore well adapted for infiltrating its tiny roots into the gaps in ramshackle walls and footpaths. As it has been recorded in the UK since 1796, however, I think we can consider it a native.Yellow Corydalis 003

The plant is a member of the Fumitory family, and I was delighted to discover that the word ‘Fumitory’ comes from ‘Fumus terrae’ – Smoke of the Earth, in tribute to the fineness of the foliage. The leaves remind me a little of the Maidenhair Fern that I had as a houseplant when I was a student. That too, was one tough plant, surviving beer, cigarettes, being accidentally upended and, on one sad occasion, being pooed in by the newly acquired kitten. Yellow Corydalis is also tough, putting up with all manner of pollution and trampling, and still bouncing back. It is also poisonous, but doesn’t have the seductive qualities of many toxic plants, with their delicious-looking red berries and interesting seeds.

Yellow Corydalis 006This is one of those plants that is so attractive that, if it were not for its omnipresence in the scabbier spots of the capital, would undoubtedly be on sale in garden centres. As usual, once something is designated as a ‘weed’, it is seen, in general, as having no redeeming features whatsoever. Here at the Wednesday Weed, of course, we have no truck with such silliness.

Yellow flowers, yellow graffiti

Yellow flowers, yellow graffiti

This plant flowers more prolifically and grows more vigorously than anything else in the alley by the side of my house, and I am grateful to it for covering up the extremely uninspiring concrete path and the gravelly bit at the bottom of the fence. Plus, it provides cover for the froglets as they make their long and dangerous journey out into the big wide world. I could spend a lot of money buying ‘shade tolerant plants’ and be wholly disappointed with the results. Sometimes, we fail to see the beauty of what’s right there in front of us in our perverse desire for improvement and novelty. Certainly I’ve been guilty of grubbing up perfectly happy native plants and replacing them with showier organisms who were miserable from the second that they were planted, and faded away to a few pathetic leaves by the end of the season. But not this time! I am learning from nature, and it will be a life-long endeavour I’m sure. If something is perfectly adapted to its environment, covered in yellow flowers and dainty foliage,  why not treasure it?

A frog corridor?