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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.
E. himalaicus is a stately plant with rosettes of bright green leaves; each leaf to 50cm long and 4cm wide. Flower spikes, up to 2m tall, comprise numerous individual white flowers, each 2.5-3.5cm across
E. stenophyllus is a perennial forming a clump of strap-shaped leaves, with small yellow star-shaped flowers borne in a dense erect raceme
'Pinokkio' is an erect, clump-forming perennial, to 1.5m tall, with lance-shaped leaves. Elegant flower spikes, comprising deep orange-yellow flowers with burnt orange anthers which emerge from dark orange buds, are borne in summer
'Cleopatra' has mid-green lance-shaped leaves and dense flower spikes composed of burnt orange flower buds which open a vibrant peach-orange with a dark red midrib on the backs of the petals and orange anthers
'Joanna' is a tall, vigorous perennial to 2.5m with dark green, strap-shaped leaves and 50cm-long spires of densely packed, pure white flowers in early summer
E.robustus is a large plant with rosettes of blue-green leaves to 1.2m long and 10cm wide. Flower spikes to 3m, individual flowers palest peachy-pink to 4cm across, the petals with brown-marked bases, stamens yellow. Attractive to butterflies
Last-listed in the RHS Plant Finder in 2013
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.
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Britain’s best gardening annual, available now from RHS Mail Order and all good bookshops.
Listed in the RHS Plant Finder
Last-listed in the RHS Plant Finder in 2015
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