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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
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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.
B. grandis subsp. evansiana var. alba is tuberous perennial with obliquely ovate, olive-green leaves, reddish beneath, and nodding clusters of slightly fragrant white flowers 2-3cm across in summer
B. grandis subsp. evansiana is tuberous perennial with obliquely ovate, olive-green leaves, sometimes reddish beneath, and nodding clusters of slightly fragrant pale pink or white flowers 2-3cm across in summer
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 2009
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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.
