The Common fragrant-orchid lives up to its name: it produces a sweet, orangey smell that is very strong in the evening. Look for its densely packed, pink flower spikes on chalk grasslands in…

Look for Water avens in damp habitats, such as riversides, wet woodlands and wet meadows. It has nodding, purple-and-orange flowers that hang on delicate, purple stems.

Look for wood avens along hedgerows and in woodlands. Its yellow flowers appear in spring and provide nectar for insects; later, they turn to red, hooked seedheads that can easily stick to a…