Look for the round, cottony, purple flower heads of the Woolly thistle on chalk and limestone grasslands in summer. It is mainly found in Southern England.

Annual meadow-grass is a coarse, vigorous grass that can be found on waste ground, bare grassland and in lawns. In some situations, it can be considered a weed.

A notoriously poisonous plant, hemlock produces umbrella-like clusters of white flowers in summer. It can be found in damp places, such as ditches, riverbanks and waste ground.

Curled dock is often considered a 'weed'. It can be found near water or on disturbed ground almost anywhere. It is similar to Broad-leaved dock, with which it can hybridise.

A scrambling 'weed' of waste ground, fields and gardens, Common fumitory can be found on dry and disturbed soils. Its pink flowers appear over spring and summer.