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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:
'Wendy's Gold' is a bulbous perennial to 20cm with broad, grey-green leaves. The white flowers have a yellow-green ovary, and a long, yellow-green mark on the inner petals
'Flore Pleno' is a bulbous perennial to 15cm, with narrow, grey-green leaves and solitary, nodding, fragrant, double white flowers 2.5cm in length, the inner segments mostly marked with green at the tip
'Comet' is a bulbous perennial with grey-green leaves and white flowers on stems around 20cm tall. The inner petals have a single, large, green mark and the outer petals sometimes have green tips
G. elwesii is a perennial to 30cm, with broad, glaucous leaves and nodding, solitary white flowers in late winter, the outer segments to 2.5cm in length, inner ones flared at tip, with both basal and apical green marks that sometimes merge into one
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
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. plicatus is a bulbous perennial to 20cm in height, with broad, grey-bloomed, dark green pleated leaves and solitary white flowers 2.5cm in length from late winter, the inner segments marked green at apex, sometimes also at base
'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
'Atkinsii' is a perennial to 25cm, with erect, glaucous leaves and solitary nodding white flowers, in late winter, with pear-shaped outer segments and shorter inner ones bearing a prominent green heart-shaped mark at the tip
'Magnet' is a bulbous perennial to 25cm in height, with narrow, glaucous leaves and solitary nodding white flowers, borne on slender, arching pedicels in late winter and early spring, the inner segments with V-shaped green mark
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