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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.
'Rubinstern' is an upright perennial to 90cm, with oval leaves and 12cm wide flower-heads opening from late summer to late autumn, the ruby-red ray florets spreading horizontally from the brown central cone
'Virgin' is an upright, fairly compact cultivar, growing to 60cm tall, with green, hairy, oval leaves. Fragrant flowers with horizontal, white ray florets surrounding a green cone are borne from summer to autumn
'White Swan' is a compact perennial of upright growth, with solitary, white flower-heads with dull yellow central disks
'Green Jewel' is an upright, herbaceous perennial of fairly compact habit, growing to 70cm tall, with green, oval leaves. Flowerheads, up to 12cm in diameter, are borne from summer into autumn on sturdy, well-branched stems and comprise light green ray florets, held slightly above the horizontal, surrounding a central darker green cone
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
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 70,000 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 2011
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