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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.
'Andenken an Ludwig Späth' is a spreading medium-sized deciduous shrub with dark green, heart-shaped leaves and fragrant, single, deep wine-red flowers in slender panicles to 30cm long
'Charles Joly' is an erect medium-sized deciduous shrub with dark green, heart-shaped leaves and dense panicles of fragrant, deep red-purple, double flowers in late spring and early summer
'Vestale' is a bushy small deciduous tree with mid-green, heart-shaped leaves and broad, compact trusses of fragrant, single white flowers
'Madame Lemoine' is a bushy medium-sized deciduous shrub with light green, heart-shaped leaves and compact trusses of fragrant, double, white flowers from yellowish buds
'Firmament' is a small deciduous tree with compact trusses of fragrant, pale lilac-blue flowers opening from pink buds. Heart-shaped, mid-green leaves
'Katherine Havemeyer' is an upright medium-sized deciduous shrub becoming spreading with age, with mid-green, heart-shaped leaves and compact panicles of fragrant, double, lavender-purple flowers which fade to lilac-pink
'Sensation' is a deciduous shrub with a relatively loose habit. It flowers in mid-summer with unusual red-purple flowers, each edged in white
Josée is a compact, bushy, rounded shrub, to 1.5m tall, with matt, oval to heart-shaped leaves. Dense sprays of fragrant, lavender-pink flowers are produced in late spring and intermittently through to late autumn; repeat flowering is best in cool climates
'Primrose' is a bushy deciduous tree with heart-shaped leaves and conical panicles of fragrant, pale creamy-yellow flowers in late spring and early summer
'Mrs Edward Harding' is a bushy medium-sized deciduous shrub with dark green, heart-shaped leaves and dense panicles of fragrant, deep purplish-red, double flowers soon fading to deep pink
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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.