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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.
'Monstrosa' produces grey-white flowering panicles with a hint of yellow, to 65cm in length, borne over high, arching foliage
'Sunningdale Silver' is a robust, evergreen grass forming a clump of arching, narrow, dark green leaves up to 1.4m in length. Long, silky, creamy-white flower heads borne on stems to 2.2m in height in summer
'Pink Feather' is a densely tufted, clump-forming, perennial grass, up to 2.5 m high and 1.5m wide, with evergreen, arching, sharply toothed, blue-green leaves, and plume-like panicles of glistening pink spikelets, in late summer or early autumn
'Highfield Pink' is a large statuesque cultivar with silvery-grey flower panicles, tinged with pink (sometimes with yellow) held above strong clumps of usually upright leaves
C. selloana is a densely tufted, clump-forming, perennial grass, 2.5-3m high and 1.8m or more wide, with evergreen, arching, sharply toothed, blue-green leaves, to 2.5m or more long, and erect stems with pyramidal to oblong plume-like panicles, 45-90cm long, of glistening silver-white spikelets about 15mm long and often flushed with pink or purple, in late summer and early autumn
'Silver Feather' has variegated leaves with a cream stripe and arching habit, and dense upright plumes of silvery, weather-resistant flowers with cream and beige tones. A small, compact cultivar suitable for small gardens
'Splendid Star' is a densely tufted, clump-forming, perennial grass, 1.2m high and 1.2m wide, with evergreen, arching, sharply toothed, blue-green leaves striped with yellow, and plume-like panicles of glistening silver-white spikelets, in late summer
'Rendatleri' is a densely tufted, clump-forming, perennial grass, 3m high and 1.5m or more wide, with evergreen, arching, sharply toothed, blue-green leaves, and spreading, drooping, one-sided plume-like panicles of glistening purplish-pink spikelets, in late summer and early autumn
'Pink Phantom' is a perennial, evergreen grass forming a compact clump of narrow, arching, light green leaves with creamy-yellow margins. Silky, silvery-pink plumes are produced on stems to 2m in height in early autumn
'Albolineata' is a compact evergreen grass to 2m, with narrow white-margined leaves and silvery plumes of flower in summer
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We're a UK charity established to share the best in gardening. We want to enrich everyone's life through plants, and make the UK a greener and more beautiful place.