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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.
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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.
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the RHS today and get 12 months for the price of 9
Other common names
tall eryngo 'Silver Ghost'
Eryngium can be annuals, biennials or perennials with simple or divided leaves, often spiny edged, and cone-like flower-heads often surrounded by an involucre of conspicuous spiny bracts
'Silver Ghost' is an erect, branching biennial with cone-like heads of blue flowers surrounded by spiny, silvery-white bracts
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
SoilSand, Loam, Chalk
pHAcid, Alkaline, Neutral
Time to ultimate height
Grow in dry, well-drained soil that is poor to moderately fertile. Full sun is essential. Tends to be a short-lived perennial but it self-seeds readily in the right conditions
Propagate by root cuttings in late winter
Suggested planting locations and garden types
Flower borders and beds Cut Flowers
Coastal Cottage & Informal Garden Gravel Garden Wildlife Gardens Architectural
Pruning Although you can cut back flower stems after flowering the seedheads are a very attractive feature so are usually left over winter
Pests Can get leaf and bud eelworms
May be affected by powdery mildews and root rot
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
tall eryngo 'Silver Ghost'
Buy from £3.05 at the RHS Plants Shop
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