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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.
'Safranvogel' is a reasonably small cultivar with low, arching foliage; height to 80cm, spread to 90cm. The elliptic to diamond-shaped flower heads are held well above the leaves, and have a delicate colouring of soft peach-pink, getting paler from bud to flower as they open
'Bressingham Comet' is a clump-forming perennial to 60cm tall with narrow, arching leaves. Spikes of red-tipped apricot-yellow flowers open from red buds in summer and autumn
'Cobra' is a semi-evergreen perennial to 1m high with strap-shaped green leaves. In summer and autumn, tall, dense spikes of bronze buds open a soft burnt orange before fading with age to a creamy white
'Bees' Sunset' is a clump-forming herbaceous perennial to 90cm, with narrow, rough-edged leaves and erect, brownish stems bearing terminal spikes of clear yellow-orange, tubular flowers
'Star of Baden-Baden' is a clump-forming perennial to 1.8m tall with dense clumps of strappy foliage and tall, sturdy stems carrying large heads of yellow flowers in summer
'Wol's Red Seedling' is a clump-forming perennial to 60cm tall with neat mounds of narrow, grass-like foliage and, in summer, short, slender spikes of deep orangey-red flowers
'Drummore Apricot' is a clump-forming perennial, to 75cm tall, with arching, strap-shaped leaves and spikes of apricot flowers, opening from green buds and maturing to yellow, from late summer to autumn
'Brimstone' is a clump-forming herbaceous perennial to 90cm, with long, slender leaves and narrow spikes of bright sulphur-yellow flowers opening from green buds
'Candlelight' is a clump-forming, deciduous perennial to 90cm tall with narrow green foliage and, from summer into autumn, spikes of lemon-yellow flowers that emerge from greenish-yellow buds
'Shining Sceptre' is a vigorous deciduous perennial to 1.2m tall, with narrow, blue-green leaves and dense spikes of orange buds opening to light yellow flowers, from early summer to early autumn
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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.