The Common osier is a small willow tree that is found in fens and ditches, and on riverbanks. It has been widely cultivated and coppiced for its twigs, which are used in traditional basket-making…

The Monkey-puzzle tree is unmistakeable with its pyramidal shape, jutting branches and stiff, dark green 'spines' (its leaves). Widely planted in the UK's parks and gardens, it is…

Ivy-leaved toadflax is an introduced species in the UK that has become widely naturalised. Look for creeping along old walls and pavements, and shingle beaches. Its flowers resemble those of…

The Lawson cypress is a large, conical-shaped, evergreen tree that has been introduced into the UK and widely planted in gardens and parks. It has also naturalised along damp banks and woodland…

The London plane tree is, as its name suggests, a familiar sight along the roadsides and in the parks of London. An introduced and widely planted species, it is tough enough to put up with city…

An introduced plant, vervain is widely naturalised in the UK. It is a great source of nectar for all kinds of insects and can be seen on rough grassland, waste ground, coastal cliffs and roadside…

The Holm oak is an introduced species that has been widely planted near the coast and in parkland. It is self-seeding in the south of the UK. Its young leaves are spiny like Holly leaves, and it…

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…

This small reddish-purple seaweed grows in small branching fans on rocky shores. It is widely used in the food industry - and might have been used to produce your ice cream, beer or even jelly!…