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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.
'Genii' is an erect medium-sized deciduous shrub with yellow-green foliage. Flowers single, small, with narrow, up-curved cerise sepals, slender cerise tube and reddish-purple petals
'Star Wars' is a n upright, bushy, deciduous shrub to 70cm tall with ovate, toothed leaves. The small, single flowers borne from summer into autumn have white tubes and sepals and violet-blue petals
'Wharfedale' is a vigorous, bushy shrub with single flowers which have pale pink swept back sepals and a bright purple corolla
'Thalia' is a Triphylla fuchsia to 75cm in height, with dark olive-green leaves, tinged purple beneath, and clusters of pendent bright orange-red flowers to 4cm in length
'Ben Jammin' is a compact, bushy, deciduous shrub to around 40cm tall with ovate, toothed leaves. Semi-double flowers to 15cm long and wide with white to pale pink sepals and tubes and dark purple petals are borne from summer into autumn
'Globosa' is a deciduous, spreading shrub to 1m tall and 1.2m wide with dark green, toothed, ovate leaves. Pendulous, single flowers comprising crimson red tubes and sepals and dark purple-violet corollas emerge from fat, rounded buds throughout the summer and into autumn
'Nellie Nuttall' is a small deciduous shrub with small, pale leaves and single flowers, the tube and sepals red, petals white
'Brutus' is a bushy, upright medium-sized deciduous shrub. Flowers single, with cerise-crimson tube and sepals, petals deep violet, becoming purple with age
'Tom West' has an upright, vigorous, lax growth and variegated cream and green foliage, with cerise veins and stems. Flowers are small, single, red and purple flowers
'Lady Boothby' is an extremely vigorous cultivar with upright growth which needs to be tied in and pinched back to keep in check. Relatively small, crimson and dark purple flowers
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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.