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AGM plants have been through a rigorous trial and assessment programme. They are:
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Other common names
Cercidiphyllum are large deciduous trees with kidney-shaped to ovate leaves, often bronze when young, and colouring well in the autumn; flowers inconspicuous
Cercidiphyllaceae / Cercidiphyllaceae
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
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
While we update our systems with the new hardiness ratings you may still see old hardiness ratings in your search results. These are denoted as 'Old'.
For full details of the hardiness ratings see
Aspect North-facing or East-facing or South-facing or West-facing
MoistureWell-drained, Moist but well-drained
SoilChalk, Clay, Sand
Higher than 12 metres
wider than 8 metres
Best grown in a woodland setting; the leaves may be damaged by late frosts
Propagate by seed, basal or semi-hardwood cuttings
Suggested planting locations and garden types
Pruning group 1
Generally pest free
Generally disease free
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
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