Cleome

RHS Genus Guide
Cleome is a large genus from tropical and subtropical areas of the world. It’s made up of annuals, perennials and evergreen shrubs, but only the annuals are commonly grown in gardens. Known for their spidery blooms and upright habit, they are equally at home in exotic or cottage-style borders.

Botanical name: Cleome

Common name: cleome, spider flower

RHS / Joanna Kossak

Appearance

Cleomes can reach 1-1.5m, with pretty, palmate leaves and spiny stems. These are topped with large, airy flowerheads in shades of pink, white, purple or rose from mid-summer to autumn. The flowers’ spider-like appearance is created by their numerous, long, slender stamens.

Preferences

Cleomes thrive in full sun and well-drained, fertile soil. They like warm weather and tolerate drought once established. Regular deadheading will prolong flowering.

Dislikes

They will not survive frost and dislike cold, damp soils and shady conditions. Young plants are sensitive to transplant shock, so they’re best sown directly where you want them, or moved carefully when very small.

Did you know?

Cleome is in the same family as edible capers, is closely related to brassicas, and some species are grown as leafy vegetables in Africa.
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