As its name suggests, Red bartsia does have a red tinge to its stem, leaves and small flowers. Look for it on roadside verges, railway cuttings and waste ground in summer.

The brown, oval flower heads of ribwort plantain balance on top of thin, wiry stems; the resulting seed heads provide food for birds in winter. Look for this 'weed' in lawns, fields and…

Common couch is a tall, tuft-forming grass of roadside verges, waste ground and arable land. It is very tough and can shade out more delicate plants. Look for flat, blade-like leaves and thin…

This large green moth rests with its wings spread, so is sometimes mistaken for a butterfly.

The large white is a common garden visitor - look out for its brilliant white wings, tipped with black.

Red squirrels are native to the UK but are a lot rarer than their grey cousins. They live in a few special places across the UK thanks to reintroduction projects.