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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.
'Daydream' is a creeping, suckering plant with ovate, hairy leaves 2.5cm long, heart-shaped at the base, on slim, wiry stems. Loose racemes of deep-pink flowers in summer
'Rupert Lambert' is a vigorous spreading perennial to 30cm, with narrow leaves and deep pink flowers 2cm across, borne in long racemes in summer
'Hopleys' is a perennial plant with bright green foliage and stiff, upright stems to about 1m, bearing racemes of dusky pink flowers, with a darker red-pink throat and yellowish anthers, over a long flowering period
'Twinkle' is a spreading perennial with bright purplish-pink flowers in long racemes in summer and early autumn
'Ruby Field' is a semi-evergreen perennial forming a mat of light green ovate leaves. Deep salmon-pink flowers in loose racemes on stems to 30cm in length in summer and early autumn
'Fisher's Flora' is a spreading semi-evergreen perennial to 25cm, with dark green leaves and deep pink flowers 2cm across in terminal racemes in summer
'Dark Eyes' is a spreading perennial to 20cm, with small leaves and terminal racemes of deep pink flowers in summer
D. rigescens is a spreading semi-evergreen perennial forming a mat of light green, broadly ovate leaves. Two-spurred, salmon-pink flowers are borne in erect spikes on stems to 45cm in height
'Joyce's Choice' is a spreading perennial with small, pale salmon-pink flowers in long racemes
N. caerulea is a tender, compact, mat-forming perennial, often grown as an annual, that reaches a height of around 50cm. The erect to spreading stems bear lance-shaped leaves, up to 3.5cm long, and two-lipped, tubular flowers in shades of blue, pink and white, with yellow throats, from spring into autumn
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