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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
While we update our systems with the new hardiness ratings you may still see old
hardiness ratings in your search results. These are denoted as 'Old'.
For full details of the hardiness ratings see
AGM plants have been through a rigorous trial and assessment programme. They are:
D. deltoides is an evergreen perennial forming a mat of green foliage, with clusters of cerise, deep crimson, pink or white flowers 18mm wide on stalks to 20cm tall
D. gratianopolitanus is an evergreen perennial to 15cm in height, forming a mat of narrow, glaucous leaves. Flowers solitary, 2cm in width, richly fragrant, with deep rose-pink, fringed petals
D. pavonius is a cushion-forming evergreen perennial with green or slightly greyish leaves and 10cm stems bearing 1-3 flowers, 2cm wide, with pale or deep pink petals, buff on reverse
'Diane' is a spreading evergreen perennial to 30cm in height, with grey-green foliage and clove-scented, double, deep salmon-pink flowers 6cm across
'Monica Wyatt' is an evergreen perennial with greyish foliage and very fragrant, double flowers, the petals bright purplish-pink, marked with magenta at the base
'Coronation Ruby' is a hardy perennial with evergreen, glaucous foliage and stems to 45cm, bearing clove-scented, double flowers 5cm in width, with pale pink petals, zoned and laced with deep maroon
'Pike's Pink' is an evergreen perennial to 15cm tall, forming a wide mat of grey-green foliage, with clove-scented, semi-double light pink flowers, each petal with a deep pink zone at the base
'Devon Maid' is a bushy evergreen perennial with grey foliage and stems to 35cm, bearing clove-scented, semi-double white flowers 5cm in width, with fringed petals and a deep crimson eye
'Devon Glow' is a bushy evergreen perennial with grey foliage and stems to 45cm, bearing clove-scented, double, vivid deep cerise-pink flowers 5cm in width
'Marg's Choice' is a bushy evergreen perennial to 30cm, with grey foliage and strongly clove-scented light coral-pink flowers 5cm in width
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