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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:
© RHS 1985
the RHS today and get 12 months for the price of 9
Other common names
black samson hedgehog cone flower
purple cone flower purple daisy eastern purple coneflower
Rudbeckia echinacea purpurea Rudbeckia purpurea
Echinacea are erect, clump-forming rhizomatous perennials with simple or pinnately lobed leaves and solitary, long-stalked daisies with prominent conical central disks and often drooping ray florets; attractive to butterflies
E. purpurea is an upright perennial with coarsely hairy, ovate or lance-shaped leaves and solitary flower-heads to 12cm across with slightly reflexed, light purple rays and brown central disk
C&E North America
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
Exposure Exposed or Sheltered
SoilSand, Loam, Chalk
pHAcid, Alkaline, Neutral
Time to ultimate height
Grow in deep, well-drained, humus-rich soil ideally in full sun although they can tolerate some shade
Propagate by seed sown at 13°C in spring. Propagate by division in spring or autumn although they resent a lot of disturbance. Propagate by root cuttings from late autumn to early winter.
Suggested planting locations and garden types
Flower borders and beds Cut Flowers
Cottage & Informal Garden Wildflower meadow Wildlife Gardens Prairie Planting
Pruning Cut back stems as the blooms fade to encourage further flower production
Pests Generally pest free
Generally disease free
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
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Join the RHS today and get 12 months for the price of 9