Often overlooked, Lesser centaury is a tiny plant of grassy, open habitats like dunes, cliffs, heaths and grasslands. As its name suggests, it is much smaller than its relative, Common centaury.…

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…

Living up to its name, the Robin's pincushion is a red, round, hairy growth that can be seen on wild roses. It is caused by the larvae of a tiny gall wasp that feeds on the host plant, but…

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…

Dittander is a herb of coastal saltmarshes and damp ground. Its waxy leaves and long roots help it to survive in this harsh environment. Due to its peppery taste, it has also become a popular…

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 common lime is a tall, broadleaf tree that is a natural hybrid between the large-leaved and small-leaved limes. It can be seen in a variety of habitats, and has been widely planted along roads…

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…