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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.
'Hearts of Gold' is a deciduous, often multi-stemmed, tree with a rounded-crown reaching a height of 5m and spread of 6m. The heart-shaped leaves emerge orange-red in spring, turning a bright gold-yellow in full sun and maturing to a yellow-green colour. Clusters of small, pea-like, rose-purple flowers are borne on bare branches in the spring before the foliage emerges
'Forest Pansy' is a large deciduous shrub or small, often multi-stemmed, tree. Leaves to 12cm in width, broadly heart-shaped, deep red-purple turning shades of orange, bronze and red-purple in autumn. Small, bright-pink flowers appear in clusters on bare stems before the leaves in spring. Grown mainly for striking foliage effects
C. japonicum var. pendulum is a deciduous tree with long, pendulous branches bearing broadly heart-shaped leaves which turn pink and orange in autumn
C. japonicum is an elegant medium-sized deciduous tree, with paired, broadly heart-shaped leaves to 10cm in length, bronze-tinted when young, and turning yellow, orange and pink in autumn, when they smell of burnt sugar. Flowers and fruits inconspicuous
'Bodnant' is a bushy, deciduous small tree with deep purple, pea-shaped flowers in clusters on the older stems. Leaves are broadly heart-shaped and fruit a conspicuous flattened purplish pod
C. siliquastrum f. albida is a spreading tree with rounded, mid-green leaves turning yellow in autumn. Clusters of pure white, pea-like flowers are produced before and with the leaves, often directly from the branches
C. magnificum is a pyramidal to broadly conical deciduous tree with smooth bark and heart-shaped leaves which are slightly bronzed when young and turn butter yellow in autumn. Reddish male and greenish female, petalless flowers are borne on separate trees in early spring. Females may later produce woody, pod-like fruit
'Boyd's Dwarf' is an elegant, small to medium, deciduous tree, with paired, broadly heart-shaped leaves, to 10cm in length. Foliage is bronze-tinted when young, shades of green in summer, then turning yellow, orange and pink in autumn; the autumn leaves with a toffee-fragrance. Flowers and fruits inconspicuous
'Morioka Weeping' is a deciduous tree with a dome-shaped, weeping habit and may eventually reach a height in excess of 20m. The heart-shaped leaves emerge reddish-purple in spring before turning blue-green; in autumn, the leaves turn shades of yellow and orange and may emit a burnt-sugar scent
'Avondale' produces abundant, densely-clustered dark purple-pink flowers in late spring before the leaves appear; leaves are relatively large, heart-shaped and tinted red-purple when they unfurl
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