Join the RHS today and support our charitable work
Free personalised gardening advice
RHS members get reduced ticket prices
RHS members get free access to RHS Gardens
Free entry to RHS members at selected times »
Reduced prices on RHS Garden courses and workshops
020 3176 5800
Mon – Fri | 9am – 5pm
Help us achieve our goals
Join the RHS today and support our charity
I have forgotten my password
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.
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.
E. pininana is a rosette-forming biennial or short-lived perennial with lance-shaped, roughly silver-hairy leaves to 7cm long. Each rosette produces a flower panicle up to 4m long of funnel-shaped blue flowers with large bracts in mid and late summer
E. russicum is a biennial or short-lived perennial producing rosettes of silky-haired, greyish green leaves. The spikes of dark red, narrowly funnel-shaped flowers are produced in late summer
'Blue Bedder' is a vigorous cultivar, at 45cm it is rather shorter than the species, multi-branched, with short, crowded spikes of violet-blue flowers, magenta flushed when fading, and pink buds. Very attractive to pollinating insects
E. wildpretii is an erect, unbranched biennial to 2m tall, with narrow, silvery-hairy leaves and a tall narrow panicle of small red flowers in early summer
E. vulgare is an erect, bristly biennial to 75cm, with lance-shaped, hairy leaves and dense cylindrical spikes of bell-shaped violet-blue flowers in early summer
E. candicans is a bushy biennial sub-shrub with grey-hairy lance-shaped leaves and dense terminal spike-like panicles of white, pale or deep blue flowers in spring and summer
Last-listed in the RHS Plant Finder in 2012
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.
Last-listed in the RHS Plant Finder in 2002
Listed in the RHS Plant Finder
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.