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…

Often a lone figure on a windswept mountainside or heath, the Rowan tree can stand for up to 200 years. It is well known for its masses of red berries that attract all kinds of birds, including…

A small woodland and hedgerow tree, Spindle is most striking in the autumn when clusters of bright pink-and-orange berries hang from its twigs, providing food for mice, birds and even Red Foxes.…

Although introduced by humans, the fallow deer has been here so long that it is considered naturalised. Look out for groups of white-spotted deer in woodland glades.

Holly is a much-loved evergreen tree - its shiny, spiky leaves and bright red berries being a favourite in Christmas decorations. Found in all kinds of habitats, it provides an important winter…

The mistle thrush likely got its name from its love of mistletoe - it will defend a berry-laden tree with extreme ferocity! It is larger and paler than the similar song thrush, standing upright…

It is so easy to miss this clever little moth. It is a master of disguise, blending in perfectly as it looks just like the twig of a birch tree! Flying only at night, the buff-tip moth can be seen…

Buddleia is a familiar shrub, well-known for its attractiveness to butterflies. It is actually an introduced species, however, that has become naturalised on waste ground, railway cuttings and in…

An introduced species, Common evening-primrose is now naturalised on waste ground, roadside verges and railway cuttings. It has long been used to produce the herbal remedy, evening-primrose oil.…

Fennel has feathery leaves and open, umbels of yellow flowers. It was probably introduced by the Romans for culinary use, and is now a naturalised species of verges, waste ground and sand dunes.…

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…