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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.
'Chameleon' is a bushy annual to 30cm with light green, circular leaves supported on central stems. In summer and early autumn flowers open primrose yellow with distinct dark red markings, later becoming suffused with shades of red and pink
Whirlybird Series are spreading annuals with rounded light green leaves and single or semi-double flowers to 5cm across, in shades of yellow, orange, red and mahogany
Alaska Series are bushy, spreading annuals to 30cm tall, with rounded leaves speckled and splashed with creamy-white, and single flowers to 6cm wide, in shades of cream, yellow, orange and mahogany-red
T. majus is an annual climber which will scramble over the ground or up a support. Circular, wavy-edged leaves are supported, parasol-like, by a central stalk. The long-spurred flowers, in shades of red, yellow and orange, appear in summer and autumn. The whole plant has a sharp aroma
'Hermine Grashoff' is a trailing perennial to 20cm in height, with rounded or kidney-shaped leaves and double orange-scarlet flowers 6cm across
Listed in the RHS Plant Finder
This plant is listed in the RHS Plant Finder book. At present our information about this plant is limited to a list of the nurseries that supply it. In time we will be adding more details including a description, growing information, advice and photographs.
Over 72,000 plants and where to buy them
Britain’s best gardening annual, available now from RHS Mail Order and all good bookshops.
Last-listed in the RHS Plant Finder in 1997
Last-listed in the RHS Plant Finder in 2015
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