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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.
P. vulgaris is a perennial forming a rosette of tongue-shaped leaves, with many scented, usually primrose-yellow flowers 2.5-3.5cm across, in early spring
P. auricula is an evergreen perennial with rosettes of obovate, sometimes mealy, pale green leaves. Fragrant, mealy-centred bright yellow flowers 1.5-2.5cm in width are carried in umbels on stems to 20cm in height
A. lanuginosa is a trailing evergreen perennial forming a mat to 45cm wide, composed of loose rosettes of silky, grey-green, ovate leaves. Umbels of bright lilac-pink flowers 8-12mm wide on stalks to 10cm open in mid summer
C. africanum is a tuberous perennial with heart-shaped bright-green leaves, to 10cm long, with pale-green markings. Flowers in shades of pink, with deep maroon mouths, appear just before the leaves in autumn
Bartley hybrids are vigorous herbaceous perennials, to 90cm tall, with a rosette of basal leaves, and erect, white-mealy stems each bearing several whorls of pale pink flowers with a contrasting eye, 2.5cm in width, in late spring and early summer
P. vulgaris subsp. vulgaris is a rosette-forming perennial to 20cm, with obovate light green leaves and clusters of fragrant, long-stalked pale yellow flowers 2.5-4cm in width
'Sierra Pink with Eye' is a perennial to 30cm, with pale pink flowers, bright purple-red around the mouth, in early winter
C. alpinum is a tuberous perennial, to 8cm in height, with rounded leaves, marbled with silver, produced in late winter and early spring. Fragrant flowers, 1.5cm in width, with propeller-like flowers in white and various shades of pink, appear at the same time
'Miracle White' is a miniature cyclamen to 15cm, with white, strongly fragrant flowers in early winter
'Sierra White With Eye' is a perennial to about 25cm in height, with silvery-marbled leaves and white flowers, feathered with bright purplish-pink around the mouth
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