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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.
'Alaska' is an upright plant to 60cm with large, pure white flowers facing upward; very floriferous
'Chaffinch' is an upright perennial with attractive, divided leaves and nodding flowers. They have light, rose-pink sepals, soft-yellow petals and slightly spreading, rose-pink spurs
A. flabellata var. pumila f. alba is a dwarf perennial to 20cm tall, with light green, divided leaves and nodding, creamy-white flowers 3cm wide
Music Series is a compact short-lived perennial to 45cm, with long-spurred flowers in shades of red, yellow, blue or white, often bicolored
A. skinneri is a herbaceous perennial, up to 1m high, with blue-green leaves and nodding flowers in summer which have green-yellow sepals and petals with yellow-orange skirts and long, bright red spurs
'Florida' is an upright plant to 75cm, with divided leaves and bright yellow flowers with pale spurs and sepals
'White Barlow' is an upright perennial, to 90cm tall, with grey-green divided leaves and distinctive, pompon-like, white, double, spur-less flowers in early spring and summer
'Clementine White' is a herbaceous perennial, up to 40cm high, with pale blue-green divided leaves, and white, pom-pom-like semi-double flowers, up to 4cm across, that face upwards and do not have spurs, in late spring or early summer
'Louisiana' is an upright perennial to 60cm, with divided leaves and flowers 6cm across with red sepals and white petals with red spurs
'Georgia' is an upright plant to 60cm with large bicoloured flowers facing upward; very floriferous
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