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A useful geranium that will thrive even in damp or dry shade. This has small deep maroon-black flowers in late spring to early summer held high above the soft-green deeply lobed leaves which are often blotched with purple. It will quickly spread to form a hummock of foliage that is excellent for suppressing weeds. Use it in woodland among ferns at the edge of a border where the dark flowers can be seen or under deciduous trees.

• Garden care: In mid-summer rejuvenate plants that are beginning to look jaded by removing old flower stems and leaves. Lift and divide large colonies in spring.