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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.
'Jessica' bears mid-pink flowers with darker pink and white markings from the throat of its funnel from spring through to the autumn. Strappy , evergreen leaves are softly hairy and wrinkled
'Amy' is a tender perennial with linear, hairy, wrinkled, mid-green leaves. Tubular flowers with spreading lobes, richly-veined and flushed purple over a white ground, are borne in profusion over a long period
'Blue Frills' is an evergreen perennial cultivar with strappy leaves that are softly hairy and wrinkled. Flowers are double with ruffled blue central petals. Upper lobes are blue, lower ones white with purple and violet-blue blotches and veining
'Burgundy Ice' is an evergreen perennial cultivar with strappy leaves that are softly hairy and wrinkled. Flowers are white-edged with white markings at the throat. Veining is dark burgundy set against a background of mottled blackcurrant shades
'Stella' is a perennial to 25cm, with a rosette of hairy, strap-shaped leaves and loose clusters of pink flowers with deeper veins on the lower lobes
'Albatross' is a rhizomatous perennial to 25cm in height, with strap-shaped leaves to 25cm in length, in a rosette, and lax clusters of white flowers 6cm across, yellow in the throat
'Helen' is a perennial forming a rosette of oblong, hairy leaves, with loose clusters of pale violet-blue flowers to 6cm across
'Susan' is a perennial to 30cm, with a rosette of hairy, oblong leaves, and sprays of magenta flowers to 6cm across, with deep yellow in the throat
'Polka-Dot Purple' is a tender perennial plant with linear, hairy, wrinkled mid-green leaves. Tubular purple flowers with spreading lobes have white edging and speckling and are borne in profusion over a long period
'Chorus Line' is a rhizomatous perennial with strap-shaped hairy leaves and sprays of double, white flowers veined with blue-violet
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We're a UK charity established to share the best in gardening. We want to enrich everyone's life through plants, and make the UK a greener and more beautiful place.