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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.
'Silver Magic' is an erect, bushy, evergreen shrub, to 4m tall, with small, almost flat, silvery-green leaves with a creamy-yellow margin flushed pale pink. Small, lightly-scented, dark purple flowers are borne in late spring and early summer
'Limelight' is a large bushy shrub, or small tree, up to 3m high with shoots that are green when young, becoming greenish-brown with age; the large, glossy, elliptic, almost flat leaves, up to 5.5cm long, are lime-green with dark green margins and pale midribs. Scented, dark brown-maroon flowers appear in late spring or early summer
'Silver Sheen' is a columnar, fairly open-growing large shrub or small tree, up to 5m high, with dark reddish-purple stems, and very small, pale green ovate leaves with a greyish-silver sheen. Male, scented, dark brown-maroon flowers appear in late spring or early summer
'Irene Paterson' is a slow-growing evergreen shrub, the rounded, undulate leaves opening white, becoming dark green speckled with white and often tinged pink in winter. Fragrant deep purple flowers are produced rather sparsely from late spring
'Garnettii' is a dense bushy medium-sized evergreen shrub of erect habit, with rounded grey-green leaves narrowly edged with cream and sometimes tinged pink in winter, and small deep purple flowers in clusters
'Abbotsbury Gold' is an evergreen shrub to 3m tall and wide, with rounded leathery yellow leaves margined with dark green; fragrant deep purple flowers 1cm wide open in late spring and early summer
'Variegatum' is a large, bushy evergreen shrub with slender, dark shoots and glossy oval leaves margined with creamy-white; small, fragrant pale yellow flowers are borne in terminal clusters in summer
'Warnham Gold' is a compact large evergreen shrub with rounded, golden-yellow leaves brightest in winter. Small scented purple flowers are borne rather sparingly from late spring
'Tom Thumb' is a dense, slow-growing small evergreen shrub of rounded habit, with deep purple, undulate leaves contrasting with light green young growth; not free-flowering
P. tobira is a dense, broad, slow-growing medium-sized evergreen shrub with leathery, glossy, obovate leaves, and large terminal umbels of small sweetly-scented flowers opening white, soon turning yellow, in late spring and early summer
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