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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.
'Ballerina' is a vigorous hybrid French lavender introduction from New Zealand. An evergreen shrub of upright habit, with aromatic silvery grey-green foliage. Purple flowers in dense aromatic spikes borne on stems 30cm high are topped by conspicuous white bracts which flush pink-purple with age. Flowers over a long period from late spring and through summer
'Kew Red' is a compact, bushy shrub to 50cm, with striking colouring. Flowers are very deep pink to red, calyces dark purple, while the sterile bracts are pale pink. Needs a sheltered position and protection from cold winds
'Hidcote Giant' is a bushy evergreen shrub to 1m tall, with narrow, grey-green leaves and long-stalked spikes of violet-blue flowers in summer
'Loddon Pink' is a compact bushy shrub with narrow greyish leaves and short, fragrant, dusky pink flower spikes in summer
'Seal' is a vigorous, bushy shrub to 1m tall with aromatic, narrow, grey-green leaves and long spikes of strongly-scented, blue-purple flowers produced freely in summer
'Victory' is a bushy, evergreen shrub to 60cm tall and wide with aromatic, narrow, grey-green leaves. Highly-scented, dark purple flowers borne in dense, cylindrical heads and topped by large, mid-purple bracts are borne from late spring into summer
'Imperial Gem' is a compact evergreen shrub with narrow grey-green leaves and fragrant spikes of deep purple flowers in summer
'Pukehou' is an evergreen shrub to around 60cm tall and wide with greyish-green foliage and spikes of deep purple flowerheads topped with up to five showy purple-blue bracts from late spring into summer
'Richard Gray' is a compact evergreen shrub to 50cm, with relatively broad, silvery-grey foliage and spikes of deep purple flowers
'Purple Emperor' is an aromatic, evergreen shrub to about 75cm with grey-green foliage and upright, dark purple flower spikes on long stalks, topped with rosy-purple bracts, from late spring and throughout summer
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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.