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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:
L. pedunculata subsp. pedunculata is a bushy evergreen shrub with narrow, grey-green leaves, and small violet flowers in long-stalked, dense ovoid heads tipped with large purple bracts
Miss Muffet is a dwarf evergreen shrub to 30cm, with narrow, grey-green leaves and violet-blue flowers in mid and late summer
'Loddon Pink' is a compact bushy shrub with narrow greyish leaves and short, fragrant, dusky pink flower spikes in summer
'Alba' is a robust evergreen shrub to 1m or more, with linear, grey-green leaves and long spikes of pure white flowers
'Imperial Gem' is a compact evergreen shrub with narrow grey-green leaves and fragrant spikes of deep purple flowers in summer
'Kew Red' is a compact, bushy shrub to 50cm, with striking colouring. Flowers are very deep pink to red, calyces dark purple, while the sterile bracts are pale pink. Needs a sheltered position and protection from cold winds
L. stoechas is a bushy, upright evergreen shrub, to 60cm high and 40cm wide. Foliage is aromatic and grey-green. The freely-produced fragrant flowerheads are densely cylindrical, tapering to a blunt tip, crowned by 4 sterile bracts 2.5cm long, give the heads a distinctive appearance. Flowers are very dark purple, calyces rather paler and greyer. Flowers for a long season over spring and summer
L. stoechas subsp. stoechas is an aromatic dwarf shrub to 60cm tall, with narrow, grey-green leaves and short-stalked, dense, ovoid heads of tiny blackish-purple flowers surmounted by a tuft of purple bracts
'Miss Katherine' is a bushy evergreen shrub to 75cm in height, with narrow, grey-green leaves and highly fragrant spikes of light pink flowers with silvery-green calyces
'Hidcote Giant' is a bushy evergreen shrub to 1m tall, with narrow, grey-green leaves and long-stalked spikes of violet-blue flowers in summer
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