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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:
Midnight Sky is an evergreen shrub of open habit with very glossy, 5cm long, dark green leaves, turning purple-black in winter. Purple-mauve flowers are produced freely during early and midsummer as the plant matures
H. vernicosa is a rounded shrub of compact habit, with small, very glossy dark green leaves and axillary racemes of small white or very pale blue flowers in early summer
Garden Beauty Blue is a very dense, multi-branched, mound-forming shrub. Deep green, glossy leaves have short internodes and, in late spring and early summer, prolific branched racemes of clear, bright blue flowers are produced; the flowers hold their strong colour for a long time without fading
'Nicola's Blush' is a rounded evergreen shrub with lance-shaped leaves to 4cm long, and racemes of magenta-pink flowers which fade to white
H. rakaiensis is a compact, rounded evergreen small shrub to 90cm in height, with small, bright green leaves and short spikes of white flowers from early summer
'Delight' is a low-growing semi-evergreen dwarf sub-shrub to 30cm, with strongly toothed, narrow-ovate leaves and erect racemes of small white flowers with conspicuous magenta veins
'Pewter Dome' is a compact, rounded dwarf evergreen shrub with grey-green, oblong leaves to 2cm long, and white flowers in dense spikes to 3cm long in early summer
'Oratia Beauty' is an evergreen shrub to 75cm tall, with elliptic, glossy dark green leaves to 6cm long, and short racemes of pink buds opening to white flowers, giving a bicoloured effect
'Red Edge' is a small evergreen shrub with oblong, blue-grey leaves which are margined with red, especially in winter. Flowers pale mauve fading to white, in short spikes
'Rhubarb and Custard' is a rounded, bushy, evergreen shrub to about 60cm. The stems are dark purple and the small, oval leaves are grey-green with an irregular cream to yellow margin and flushed with pink, especially in cold weather. Short spikes of small, purple flowers appear in mid- to late summer
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