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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.
'Stardust' is a medium-sized, narrowly conical evergreen tree, with pale yellow foliage, suffused with bronze, in flat sprays
'Minima Glauca' is a dwarf evergreen conifer forming a small globose shrub with dense, vertical sprays of dark blue-green foliage
'Kilmacurragh' is an evergreen conifer of narrowly columnar growth, making a medium-sized tree. Foliage dense, dark green, on short, ascending branches
'Little Spire' is a slow-growing evergreen conifer of conical habit, with dark blue-green foliage in small, dense, thick sprays
Ellwood's Pillar is a dwarf, evergreen tree to 1.2m tall with a narrow, columnar habit and feathery, densely-packed sprays of blue-green to grey-green foliage
'Fletcheri' is an evergreen conifer making a small tree of dense, columnar growth, broadly so when multi-stemmed. Foliage semi-juvenile, grey-green, often bronzed in winter
'Minima Aurea' is a dwarf evergreen conifer making a small shrub of conical habit, with golden-yellow foliage held in dense, mostly vertical sprays
'Erecta Viridis' is a columnar tree to 20m, with erect branches bearing flat, upright sprays of rich green foliage
'Grayswood Feather' is a compact conifer of columnar habit, with soft, semi-juvenile foliage that is usually dark green, but may be yellowish on alkaline soils
'Triomf van Boskoop' is a broadly columnar evergreen tree to 25m, with light, blue-grey foliage
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