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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.
'Gallery Pablo' is a compact plant to 50cm, with light coral-red flowerheads, the florets shading to apricot-yellow towards the base
'Lucy' is a cultivar that reaches 90cm in height. It flowers early, in late summer to early autumn, bearing sprays of anemone-style flowers with yellow centres and pale pink florets
'Alison Taylor' grows to 60cm in height, with up to 5 flowers per stem, the standards ochre yellow fading to cream in the centre, the falls bright lemon yellow edged with ochre yellow
'Southern Charm' is a clump-forming, upright, sometimes short-lived perennial to 1.2m high, its greyish-green, hairy leaves forming a basal rosette. Long spikes of flowers in pastel shades ranging from cream, pale pink, apricot and lavender with purple stamens are borne in summer
'Orange Glow' forms a small clump of rounded, palmately lobed basal leaves, with deep yellow flowers 2-3cm wide, sitting above deeply divided green bracts and opening in late winter and early spring
'Wisley Supreme' is a spreading deciduous shrub or small tree, with broadly ovate or rounded leaves and fragrant golden-yellow flowers borne in small clusters on the leafless twigs from mid to late winter
S. flava is a carnivorous perennial to 90cm, with slender yellow-green pitchers with erect lids, and nodding yellow flowers 10cm across
'Chameleon' is a bushy annual to 30cm with light green, circular leaves supported on central stems. In summer and early autumn flowers open primrose yellow with distinct dark red markings, later becoming suffused with shades of red and pink
Blossom of Snow 'Berghman' is a perennial to 20cm in height or more, with narrow, grey-green leaves and prolific, large heads of yellowish-white flowers surrounded by star-shaped white bracts in late spring and early summer
'Variegatum' is a semi-evergreen perennial forming a low clump to 10cm in height, with fleshy, bluntly toothed obovate leaves margined with creamy-white and tinged pink, and loose clusters of starry bright yellow flowers in late 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.