Help us achieve our goals:
make a donation »
Join the RHS today and
support our charity
Free personalised gardening advice
RHS members get reduced ticket prices
RHS members get free access to RHS Gardens
Reduced prices on RHS Garden courses and workshops
020 3176 5800
Mon – Fri | 9am – 5pm
Make a donation
Join the RHS today and support our charity
Register for free to receive our newsletters, add comments to blogs/articles and to save content.
We have combined these two powerful search tools into a single Find a Plant service searching over 250,000 plant records.
Virtually all of the features of the old searches are still available and in addition we have added several new features to create a more comprehensive and user friendly search experience.
When using this search
Search by plant name, key attributes or both to find plant details and a list of
AGM plants have been through a rigorous trial and assessment programme. They are:
© RHS 2000
the RHS today and get 12 months for the price of 9
Other common names
Geranium can be annuals, biennials and perennials, herbaceous or evergreen, with rounded, usually palmately lobed or divided leaves, and lax inflorescences of rounded, 5-petalled flowers
G. psilostemon is an herbaceous perennial forming a large clump of lobed leaves, tinted red in autumn. Flowers 4cm in width, magenta-crimson with black centres, on upright stems to 1.2m
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
Aspect South-facing or East-facing or West-facing or North-facing
Exposure Exposed or Sheltered
MoistureMoist but well-drained, Well-drained
SoilChalk, Loam, Sand, Clay
pHAcid, Alkaline, Neutral
Time to ultimate height
Grow in any, moderately fertile soil apart from waterlogged soils. Full sun or partial shade is best but shade is tolerated. Quite a tall species so may need support to prevent it flopping
Propagate by division in spring or propagate by basal cuttings in early to mid spring and root with bottom heat
Suggested planting locations and garden types
Banks and Slopes Flower borders and beds Ground Cover Low Maintenance Underplanting of Roses and Shrubs
City & Courtyard Gardens Cottage & Informal Garden Patio & Container Plants Wildlife Gardens
Pruning Remove flowered stems and old leaves to encourage the production of fresh leaves and flowers
Pests May be attacked by vine weevil, sawflies, slugs and snails
May be subject to powdery mildews, a downy mildew and a virus
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
Buy from £6.99
at the RHS Plants Shop
We're a UK charity established to share the best in gardening. We want to enrich everyone's life through plants, and make the UK a greener and more beautiful place.
Like this page on facebook
Click on the Tweet button below to compose your tweet.
Join the RHS today and get 12 months for the price of 9