91µ¼º½

Geranium

RHS Genus Guide
Geraniums are generally long-lived, easy-to-grow plants and most are perfect in borders for the classic cottage garden look. Coming from a wide range of wild habitats originally, there’s one for virtually every situation including rose borders, woodland beds, rock gardens and the greenhouse. Geraniums share a common name with pelargoniums – tender plants usually seen in bedding displays and containers for summer

Common name: cranesbill

Appearance

Most geraniums bear saucer-shaped flowers in shades of pink, magenta, white, violet and blue on wiry stems, in summer Foliage light green, bright green or silvery and is frequently dissected or patterned, providing an attractive textured backdrop beneath the flowers They can be short and prostrate like G. 'Mavis Simpson', medium-sized and clump-forming like G. phaeum cultivars or G. psilostemon, carpeting like G. macrorrhizum or G. procurrens,mat-forming likeG. himalayenseand trailing likeG. riversleaianum 'Russell Prichard' A few species are summer dormant. These flower in spring then die back, reappearing in autumn or spring. G. malviflorum is an example of this type For a plant that flowers almost non-stop from spring until autumn try G. Rozanne ('Gerwat')

Preferences

Hardy garden geraniums like, G. 'Orion' or G.clarkei 'Kashmir White' thrive on most soils, including heavy clay Some species do well in dry, shaded spots like G. macrorrhizum, G. nodosum and G. phaeum Small rock garden types likeG. dalmaticumand G. cinereum 'Ballerina' want free-draining sites Two species, natives of the Canary Islands, G. maderenseand G. palmatum need to spend winter somewhere frost-free, but these are in the minority

Dislikes

Rock garden types like G. cinereum cultivars need sharp drainage and won’t thrive in heavy soils Even the happy-go-lucky hardy garden geraniums don’t like to be waterlogged in winter G. palmatum and G. maderense want frost-free conditions

Did you know?

Britain has three native geraniums: G. pratense (meadow cranesbill),G. sylvaticum(wood cranesbill) and G. sanguineum (bloody cranesbill) The common name cranesbill comes from the long, pointed seed capsule that resembles a crane’s bill
RHS Growing Guide
Growing guide
FREE

Read our comprehensive free RHS Growing Guide:

How to grow geraniums

Read Guide