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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.
T. grandiflorum is a vigorous perennial forming a large clump of erect stems each carrying a whorl of three broadly ovate leaves and a solitary terminal flower to 10cm across, with three recurved white petals
T. grandiflorum f. roseum is a rhizomatous perennial forming a clump to 45cm tall, with ovate leaves to 30cm long, and solitary clear pink flowers to 12cm across in late spring and early summer
'Flore Pleno' is a clump-forming herbaceous perennial to 40cm, with large, broadly ovate leaves and solitary, fully double, pure white flowers 8-12cm across in spring and early summer
'Snowbunting' is a clump-forming herbaceous perennial, to 40cm tall, with large, broadly ovate leaves and solitary, fully double, creamy-white flowers, 8-12cm across, in spring and early summer. The petals fade to pale pink with age
Last-listed in the RHS Plant Finder in 2013
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.
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Last-listed in the RHS Plant Finder in 2014
Listed in the RHS Plant Finder
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