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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.
'Donard Gold' is a narrowly conical evergreen tree with bright yellow foliage, colouring best in full sun
'Blue Ice' is a narrowly flame-shaped evergreen conifer with vivid whitish-blue foliage in dense sprays
'Green Pencil' is a narrowly columnar evergreen tree with rich green foliage in upright sprays
C. lusitanica is a large conical or columnar coniferous tree with blue-green or grey-green foliage and rich brown, fissured, peeling bark
'Swane's Golden' is a narrowly columnar conifer to 6m, with light yellow to greenish-yellow foliage
C. macrocarpa is a large evergreen tree to 30m, columnar when young, becoming wide-spreading and irregular with age, the dark green foliage in erect sprays, with globose cones 2-3cm across
'Pyramidalis' is an evergreen conifer making a medium-sized tree of narrowly conical habit. Foliage glaucous-blue, in open sprays. Small pale yellow male cones abundant; cones 2cm, globose, glaucous
Stricta Group are narrowly columnar, evergreen conifers with dense, dark green foliage in short sprays on erect branches
'Lutea' is a loosely conical tree with a rather bushy habit, the young foliage light yellow, becoming greener with age
'Totem Pole' is a narrowly columnar evergreen conifer with tight, dark green foliage
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