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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.
'Red Velvet' is a bulbous perennial to about 1m with upright, red-flushed stems bearing narrow, mid-green leaves. The fragrant flowers, appearing in mid- to late summer, are deep, rich red, with reflexed petals and orange stamens
'Grand Cru' is an upright bulbous perennial with leafy stems bearing upward-facing, wide-open bright yellow flowers up to 15cm wide in mid summer, each petal with a deep red stain at the base
L. rubellum is a bulbous perennial to 80cm tall with narrowly oval leaves. Up to nine, scented, broadly funnel-shaped flowers with gently flaring , pale pink petals are borne on upright stems in early summer
'Pink Perfection' is a strong-growing bulbous perennial to 2m in height, with narrow dark green leaves and large, fragrant, trumpet-shaped, pale or deep purplish-pink flowers
Golden Splendor Group are vigorous bulbous perennials with outward-facing, trumpet-shaped yellow flowers, marked with purple on the outside, in summer
N. thompsonianum is a bulbous perennial with narrow, bright green, strap-shaped leaves, up to 45cm at the base, shorter on the stems. The scented, pale lilac-pink, lily-like flowers are produced in spikes of 10 to 30 in early summer
'Perfect Joy' is a large-flowered bulbous perennial, with healthy dark green foliage and large, trumpet-shaped, strawberry-pink flowers, soft-white in the centre, produced on upright stems during summer and autumn
'Orange Marmalade' produces dainty, star-shaped flowers, soft tangerine-orange in colour, with up to 30 flowers on tall upright stems reaching up to 1-1.2m and flowering in early to mid summer
L. tsingtauense produces upright stems and dark green leaves and in midsummer bears umbels of up to 15 upright, shallowly trumpet-shaped, maroon-spotted, orange or orange-red flowers, 5-8cm across, with narrow tepals
L. lankongense is a bulbous perennial that has lance-shaped dark green leaves and racemes of up to 15 turkscap pink flowers with darker spots, borne in midsummer
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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.