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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.
A. koreana is a compact tree of conical outline, with dark green needle-like leaves white beneath, and handsome blue or purple cones often borne on young trees
A. megapotamicum is a deciduous or partially evergreen, medium-sized shrub to 2m, with tapering, narrowly ovate leaves, and pendulous, bell-shaped flowers with yellow petals and large crimson calyx, in summer and autumn
A. pravissima is an evergreen shrub to 5m or more, with crowded, triangular leaf-like phyllodes and racemes of small rich yellow flower-heads in late winter and early spring
A. cappadocicum is a medium to large deciduous tree to 20m tall with a rounded, spreading crown. The five to seven-lobed, pointed, glossy green leaves turn a rich yellow in autumn; the leaf stalks exude a milky sap when broken. Clusters of small yellow-green flowers in early spring are followed by winged seeds
A. cissifolium is a small, spreading, rounded tree to 8m tall and 12m wide. Leaves comprise three oval, coarsely-toothed leaflets and are bronze-tinged when young, maturing to a dark green and turning shades of red and yellow in autumn. Tiny yellow flowers are borne in racemes, to 10cm long, in spring
A. davidii is a deciduous tree with arching branches and green- and white-streaked bark. Leaves can be ovate, unlobed or shallowly lobed, and are mid-green to 15cm in length. In autumn, leaves turn orange to yellow, when pink-brown fruit are also borne
A. griseum is a small spreading deciduous tree with attractive peeling, papery chestnut-brown bark. Leaves with 3 leaflets, downy and whitish beneath, turning brilliant red and orange in autumn. Flowers small
A. grosseri is a small, spreading tree, to 10m tall, with white and grey-green striped bark. Triangular, shallowly-lobed, mid-green leaves, to 7cm long, turn orange or yellow in autumn. Small yellow-green flowers are held in pendent racemes during spring
A. monspessulanum is a bushy, rounded small tree, to 8m in height, with leathery, glossy, dark-green leaves. Profuse yellow-green flowers in pendent racemes in spring are followed by red-winged fruit in summer
A. pensylvanicum is a snakebark maple forming a medium-sized deciduous tree of upright growth, with white-striped green young branches. Leaves large, 3-lobed, turning yellow in autumn. Flowers yellow in drooping racemes
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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.