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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.
When using this search
Search by plant name, key attributes or both to find plant details and a list of
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.
the RHS today and get 12 months for the price of 9
Other common names
Stachys grandiflora Stachys spicata
Stachys macrantha Betonica grandiflora
Betonica is a genus of native perennial wildflowers with narrow, oval leaves on upright stems. Bright purple to red flowers appear throughout the summer and into early autumn.
S. macrantha is an upright perennial to 60cm tall, with neatly toothed, oblong leaves and hooded pinky-purple flowers, 3.5cm long, in dense spikes in summer and early autumn
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
Aspect West-facing or East-facing or South-facing
MoistureWell-drained, Moist but well-drained
SoilChalk, Loam, Sand
pHAlkaline, Neutral, Acid
Time to ultimate height
Grow in moderately fertile, well-drained soil in full sun or partial shade
Divide in spring. Propagate by seed in spring or autumn and keep in a cold frame
Suggested planting locations and garden types
Flower borders and beds Underplanting of Roses and Shrubs
City & Courtyard Gardens Coastal Cottage & Informal Garden Wildlife Gardens
Pruning Remove flowered stems
Pests Slugs and snails may be a problem
May be affected by powdery mildews
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.