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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.
L. nepalense is a stem-rooting lily with rhizomatous bulbs, upright or arching stems, and scattered deep green leaves. The unscented or unpleasantly scented, funnel-shaped flowers, produced in early to mid-summer, are white, greenish or yellow in bud, opening to reveal a maroon centre
F. viridescens is a cactus with bright green, usually solitary, globose or cylindric, shallowly ribbed stems to 30cm in height; central spines yellow, curved, to 5cm in length. Flowers 5cm, green or tinged with red
'Crimson King' is a vigorous medium-sized deciduous tree. Leaves large, 5-lobed, deep purplish-crimson all summer. Flowers reddish-orange, in clusters on leafless branches
'Devon Maid' is a bushy evergreen perennial with grey foliage and stems to 35cm, bearing clove-scented, semi-double white flowers 5cm in width, with fringed petals and a deep crimson eye
'Flame' is a tender perennial with lobed grey-green leaves and long-stemmed bright orange-red flowers to 8cm across
'Red Gem' is a dwarf perennial bulb, to 15cm tall, with green-glaucous narrow leaves. Red flowers, with a black base, appear in late spring
'Eileen Neal' is a vigorous perennial with strongly clove-scented double flowers to 6cm across, the slightly fringed petals salmon-red with purple flecks
'Roi Soleil' is a clump-forming plant to 1.8m tall with green leaves edged with red, and bright red flowers marked with yellow in the throat
'Bristol Ruby' is a deciduous shrub of upright habit, with dark green leaves and dark crimson, bell-shaped flowers in late spring and early summer
'Halios Bright Fuchsia' is a tuberous perennial to 30cm, with silvery-marbled leaves and vivid purplish-red flowers with deep purple mouth, borne in autumn and early winter
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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.