Geranium sylvaticum plant grows to 75 cm (30 in) tall by 60 cm (24 in) wide, it is a mound-forming herbaceous, gynodioecious perennial with deeply cut and toothed 7-lobed basal leaves. In summer, flowers are borne on stalks with ruffs of leaves. The flower colour ranges from mauve to sky blue, depending on soil conditions. It has 10 stamens and glandular-hairy fruits. G. sylvaticum is one of many Geranium species which are valued in gardens. It is suitable for cultivation in temperate climates in reliably moist, lightly shaded positions, as the name suggests. It is particularly useful for underplanting deciduous trees, roses, lilies, and other summer-flowering subjects.