Sheffield Tree Week starts today and my contribution to the festival is this short film that I recorded over the weekend while walking in the wonderful Ecclesall Woods, the city’s largest woodland.
At this point in the summer the tree canopy is at its most dense and many woodland wildflowers have long since flowered. However there are a few midsummer highlights including: bramble (Rubus fruiticosus), honeysuckle (Lonicerapericlymenum) and enchanter’s nightshade (Circaea lutetiana), all of which are in bloom. Plus ripe and juicy raspberries (Rubus idaeus) where the light levels are higher.
Also included within this video are tips for identifying: hornbeam (Carpinus betulus); larch (Larix decidua); Scot’s pine (Pinus sylvestris) and rowan (Sorbus aucuparia).
Visit the Sheffield Tree Week website for more information.
On a recent visit to Newfield Spring Wood, a woodland close to my home in the southwest of Sheffield, I spotted a classic ancient woodland indicator species: yellow archangel (Lamium galeobdolon). This foliage of this plant superficially resembles the familiar stinging nettle (Urtica dioica), however it can be easily distinguished when in flower. Stinging nettle has lots of tiny ball-like flowers hanging down in chains, whereas yellow archangel has whorls of bright yellow hooded flowers. The adventurous could also tell them apart by testing the leaves – if it hurts it is a stinging nettle!
On this occasion I saw yellow archangel growing alongside white dead-nettle (Lamium album) – also a non-stinger, which has similar flowers (but in white) and broader leaves. Included below is a photo of them growing together to make identification easier.
Although yellow archangel should be a locally common species associated with the ancient woodlands and hedgerows of Sheffield, what is actually frequently found is Lamium galeobdolon‘Variegatum’ which, as the name suggests, has a variegated leaf. This is a cultivated species that often escapes from gardens into woodlands.