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We have combined these two powerful search tools into a single Find a Plant service searching over 250,000 plant records.
Virtually all of the features of the old searches are still available and in addition we have added several new features to create a more comprehensive and user friendly search experience.
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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.
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Other common names
Cape primrose 'Harlequin Blue'
Streptocarpus can be annuals, perennials or subshrubs, with usually wrinkled, lance-shaped to rounded leaves and clusters of tubular to trumpet-shaped flowers with 5 spreading lobes, often borne throughout the year
'Harlequin Blue' is a compact cultivar with short flower stems to 4.4cm and neat leaves. Flowers are distinctive with yellow lower lobes, which hold their colour well, soft blue upper lobes and very dark purple lines in the throat defining the extent of the two colours. Winner of the RHS Chelsea Flower Show Plant of the Year in 2010. Shortlisted for Chelsea Plant of the Centenary in 2013 for the decade 2003-2012
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
Aspect South-facing or East-facing
MoistureMoist but well-drained
SoilSand, Clay, Chalk
pHAcid, Alkaline, Neutral
Time to ultimate height
Grow under glass in loam-less compost in bright filtered light. Allow compost to dry between waterings. Remove faded flower stalks to discourage seedlings
Propagate by seed or leaf cuttings
Suggested planting locations and garden types
Patio & Container Plants
Pruning No pruning required
Pests May be attacked by leafhoppers, mealybugs, thrips, vine weevil and tarsonemid mite
Generally disease free
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
Cape primrose 'Harlequin Blue'
Buy from £19.99 at the RHS Plants Shop
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