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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.
P. likiangensis is a conical or columnar coniferous tree, to 25m tall, that shows a marked degree of variation within the species. Young shoots are a pale brown or red colour and the bark becomes grey and fissured with age. Its flattened needle-like leaves are 1-2cm long, bluish-green above and glaucous beneath with those on the upper side of the shoot pointing forwards. The ovoid cones, up to 10cm long, are red when young maturing to a pale brown
'Koster' is an evergreen conifer making a medium-sized tree of neat, conical habit, with prickly, vivid silvery-blue foliage
'Nidiformis' is a dense, spreading, flat-topped evergreen dwarf shrub, wider than tall, with short dark green needles
'Inversa' is a large, coniferous shrub, to 9m tall, with dense, dark green foliage. The main and secondary branches of this cultivar are quite pendulous and adpressed to the upright trunk
'Little Gem' is a very slow-growing evergreen conifer forming a squat, globose bun with short, dense, dark green needle-like leaves, the new growth in spring brighter green
'Nana' is a slow-growing evergreen conifer making a dwarf shrub of dense rounded habit, with grey-green, needle-like foliage
'Alberta Globe' is a slow-growing dwarf conifer forming a globose plant with very short needles
P. omorika is an evergreen conifer forming a graceful, slender tree of narrowly conical habit, with dark foliage, whitish beneath, in drooping sprays curving up at the tips
P. asperata is a conical or columnar coniferous tree to 25m. The needle-like leaves are dark green or blue-green about 2cm long, stiff and upward pointing. The green then light brown, cylindrical, female cones can be up to 15cm long
P. breweriana is an evergreen conifer forming a medium-sized tree of broadly conical habit, with drooping curtains of dark green foliage, and oblong purplish cones to 10cm in length
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