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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
N. obvallaris is a bulbous perennial to 30cm tall, with glaucous, strap-shaped leaves and solitary bright yellow flowers with flared trumpets and slightly paler perianth segments, opening in early spring
'Jury's Yellow' is a compact and erect evergreen shrub with medium-sized, anemone-form white flowers with conspicuous yellow petaloids in the centre
'Daydawn' is a spreading, bushy deciduous shrub to 80cm tall, with small, pinnate leaves and saucer-shaped pale yellow flowers tinged yellow and pink, from early summer to early autumn
N. fernandesii var. cordubensis is a daffodil up to 25cm high with green unkeeled leaves and stems with up to five golden yellow, sweetly-scented flowers, each about 3cm across, the perianth segments slightly recurved and twisted, the cups small and flat, in mid-spring
C. macrocephala is a large, clump-forming perennial with simple or lobed leaves and yellow flower-heads 5cm across opening in summer from brown buds
I. magnifica is a bulbous perennial to 50cm in height, with arching, glossy green leaves and 2-6 pale lilac flowers 8cm in width from the leaf axils in late spring, the falls near-white with a yellow centre line
Loraine Sunshine is a compact herbaceous perennial, to about 90cm tall, with white foliage marked with dark green veins. The yellow, daisy-like flowers appear from mid summer until the first frosts
'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
'Arthur Bell' is a small shrub of upright, bushy growth, with glossy bright green foliage and clusters of fragrant, cupped, double flowers 8cm in width, opening bright yellow, ageing to creamy-yellow
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