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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.
'Lady Elphinstone' is a bulbous perennial, to 12cm tall, with narrow, grey-green leaves and solitary, nodding, fragrant, double white flowers, the inner segments lightly-marked with greenish-yellow
'Jacquenetta' is a bulbous perennial with narrow, grey-green leaves, slightly folded at the margins and with a greyer central stripe. In late winter bears large, double flowers up to 2.5cm across. The inner petals are strongly-marked with green at the tips
'Cedric's Prolific' is a vigorous, bulbous perennial with broad, grey-green leaves 2.5cm across, and white flowers on stems up to 40cm tall. The inner petals have a large, green mark and the outer petals have fine green streaks at the tips
G. gracilis forms a clump of linear, twisted, grey-green elaves and scented, nodding white flowers 2.5cm long, the inner tepals each with two green marks; flowering in late winter and early spring
Sandersii Group are bulbous perennials, to 15cm tall, with narrow, grey-green leaves and solitary, single white flowers with a yellow ovary and inner markings. They are selections from a population of yellow snowdrops in Northumberland
'Straffan' is a bulbous perennial to 12cm with narrow, grey-green leaves. It reliably produces two flowers per bulb giving it a long flowering period in spring
G. reginae-olgae supsp. reginae-olgae is a small bulbous perennial producing white flowers with green markings in autumn, just as the 10cm-long leaves are starting to emerge
G. nivalis is a perennial to 15cm, with narrow, grey-green leaves and solitary, nodding, fragrant white flowers 2.5cm in length, the inner segments marked with green at the tip
'Mrs MacNamara' is a bulbous perennial with grey-green leaves and slender, white flowers appearing in mid-winter on stems around 25cm tall. The inner petals have a single, small, green, inverted V
'Godfrey Owen' is a bulbous perennial with grey-green leaves and white flowers on stems around 20cm tall. It has 6, pure white, symmetrical outer petals which open to give a wide, lamp-shade-like form over 6 inner petals, each of which bears a green apical mark that divides across the petal tip
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