The pungent, rotten smell of Black Horehound makes this medium-sized plant of waste ground and roadside verges stand out from the crowd.

Look out for the small, yellow flowers of Celery-leaved buttercup in wet meadows and at the edges of ponds and ditches. It flowers from May to September.

The dark-blue flowers of Common milkwort pepper our grasslands from May to September. It can also appear in pink and white forms.

The unpleasant, astringent smell of Hedge woundwort makes this medium-sized plant of woodlands, hedgerows and roadside verges stand out from the crowd.

Pellitory-of-the-wall is a small to medium-sized herb that frequently grows from cracks in old stone walls, pavements, cliffs and banks, and churches and ruins.

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.