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
I have forgotten my password
Keep me signed in
Register for free to receive our newsletters, add comments to blogs/articles and to save content.
See what events are on near you and browse your bookmarked pages.
Don’t miss out - book in advance and save
Begin a new search
All ratings refer to the UK growing conditions unless otherwise stated. Minimum
temperature ranges (in degrees C) are shown in brackets
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.
'Iceberg' is a mat-forming evergreen perennial with small awl-shaped leaves and blue-tinged white flowers 1.5cm in width, solitary or 2-3 in a cluster, in late spring and early summer
'Red Admiral' is a compact evergreen perennial to 15cm in height, forming a mat of small, dark green, awl-shaped leaves. Flowers rich deep crimson, 1.5cm in width, 1-3 at the ends of the stems, in late spring and early summer
'Boothman's Variety' is a neat, mat-forming evergreen perennial to 10cm in height, with small, awl-shaped, dark green leaves and rounded, dark-eyed purplish-pink flowers 1.5cm across from late spring
'Crackerjack' is a compact evergreen perennial to 10cm in height, forming a mat of dark green, awl-shaped leaves and usually solitary, magenta-red flowers 1.5cm across from late spring
Listed in the RHS Plant Finder
This plant is listed in the RHS Plant Finder book. At present our information about this plant is limited to a list of the nurseries that supply it. In time we will be adding more details including a description, growing information, advice and photographs.
Over 72,000 plants and where to buy them
Britain’s best gardening annual, available now from RHS Mail Order and all good bookshops.
Choose from hundreds of plants, bulbs, seeds and gardening products from our online shop.
Save now on all plants
& bulbs from 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.
Join the RHS today and get 12 months for the price of 9