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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.
T. henryana is a slow-growing, medium-sized tree with a rounded crown, eventually reaching up to 25m in height. The broadly-ovate leaves are up to 13cm long, softly downy on both surfaces and edged with bristle-like teeth. Foliage often emerges red-tinged. Clusters of fragrant, creamy-white flowers are borne in summer
T. cordata is a medium-sized deciduous tree with a spreading or rounded crown, and glossy dark green, heart-shaped leaves to 8cm in length, turning yellow in autumn. Small, fragrant creamy-white flowers are borne in spreading clusters in summer
A. cordata is a vigorous deciduous medium-sized tree with shiny deep green leaves. Male catkins yellow, to 10cm in length. Fruit 2.5cm in length, cone-like
'Rubra' is a large vigorous deciduous tree of rather erect habit, the twigs reddish in winter. Heart-shaped dark green leaves to 12cm in length, and clusters of small, fragrant yellowish flowers
'Winter Orange' is a selection of this medium-sized deciduous tree that has red buds and orange winter shoots. Leaf colour in autumn is butter-yellow. Small, fragrant creamy-white flowers are borne in spreading clusters in summer
'Petiolaris' is a vigorous and elegant large deciduous tree with pendulous branches bearing heart-shaped dark green leaves whitish beneath. Clusters of highly scented yellowish flowers are narcotic to bees
T. × euchlora is a large deciduous tree with spreading or arching branches and green young shoots bearing glossy deep green leaves turning yellow in autumn. Fragrant cream flowers may narcotise bees
Last-listed in the RHS Plant Finder in 2002
This plant is listed in the RHS Plant Finder book. At present our information about this plant is limited to a list of the nurseries that supply it. In time we will be adding more details including a description, growing information, advice and photographs.
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Last-listed in the RHS Plant Finder in 1998
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