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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:
This plant will provide nectar and pollen for bees and the many other types of pollinating insects.
It is included in an evolving list of plants carefully researched and chosen by RHS experts. Divided into 3 groups these lists, linked below, are maintained by a team of RHS staff and are reviewed annually.
the RHS today and get 12 months for the price of 9
Other common names
barrenwort 'William Stearn'
Epimedium are rhizomatous perennials with evergreen or deciduous, ternately or pinnately divided leaves, and open sprays of small, bowl-shaped flowers, often with prominent spurs, in mid to late spring
'William Stearn' is a clump-forming rhizomatous perennial 18-30cm high, with evergreen leaves divided into heart-shaped leaflets which emerge mottled and splashed with dark red and mature to green, and very dark red flowers with pale pink spurs tipped with yellow, in spring; Epimedium leaves may be used for their nests by leaf-cutting bees
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
Aspect North-facing or South-facing or West-facing or East-facing
MoistureMoist but well-drained
SoilLoam, Sand, Clay, Chalk
pHAcid, Alkaline, Neutral
Time to ultimate height
Grow in fertile, humus-rich, moist but well-drained soil in partial shade, with shelter from cold, drying winds; where frosts are prolonged or severe, spread an organic mulch such as leaf mould or composted bark to protect plants over winter
Propagate by division in autumn or after flowering; or by root cuttings of rhizomes, kept under glass in winter, and planted out after all danger of frost has passed
Suggested planting locations and garden types
Banks and Slopes Flower borders and beds Ground Cover Low Maintenance Garden Edging Underplanting of Roses and Shrubs
Cottage & Informal Garden City & Courtyard Gardens
Pruning No pruning required, but cutting back in late winter or early spring, before flower spikes form, will improve appearance
Pests May be affected by vine weevil
May be affected by mosaic virus diseases and fungal leaf spots
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.