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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
globe artichoke cardoon
Cynara cardunculus Cardoon
Cynara are robust thistle-like plants with grey-hairy, pinnately lobed leaves and globose purple flower-heads
C. cardunculus is a robust herbaceous perennial to 2.5m forming a clump of silvery-grey, pinnatifid, spiny leaves up to 1m in length. Large thistle-like purple flowers in late summer and autumn
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
SoilLoam, Chalk, Sand
pHAcid, Alkaline, Neutral
Time to ultimate height
Grow in a fertile, well-drained soil in full sun; shelter from strong winds. In very cold winters, apply a dry mulch.
Propagate by seed sown in pots in a cold frame or propagate by division in spring or take root cuttings in winter
Suggested planting locations and garden types
Flower borders and beds Cut Flowers
Architectural Cottage & Informal Garden Wildlife Gardens
Pruning Cut down flower stems as they emerge in summer if you want to grow it as a foliage plant
Pests Can be damaged by snails, slugs and blackfly
Generally disease free
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
Buy from £5.99 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.