Caddisflies are a large order of insects that can be found in all kinds of wetlands. The larvae are known for making cases to pupate in, gathering stones, sand and leaves, and wrapping them with…

Due to the devastating effects of Dutch elm disease in the 20th century, wych elm is rarely found as a large tree, but is more common as a shrub along hedgerows and streams, and in upland areas.…

A fleshy herb of the wet margins of brooks, streams and ditches, Brooklime can be seen all year-round and provides shelter for tadpoles and sticklebacks.

Water figwort is a tall plant of riverbanks, pond margins, damp meadows and wet woodlands. Its maroon flowers are pollinated by the Common wasp.

The delicate, tube-like, violet-blue flowers of Skullcap bloom from June to September in damp places, such as marshes, fens, riverbanks and pond margins.

As its name suggests, the zebra spider has the familiar black-and-white stripes of a zebra, making it very distinctive. It can be found stalking its prey on rocks, trees and walls, particularly in…

The Sitka spruce was introduced into the UK from North America in the 19th century. It has been widely planted as a forestry tree; look for classic needle-like leaves and pale brown, domed cones…

Introduced from Japan in the 19th century, Japanese knotweed is now an invasive non-native plant of many riverbanks, waste grounds and roadside verges, where it prevents native species from…