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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
Wherry's foam flower
Tiarella collina Tiarella cordifolia var. collina
Tiarella are rhizomatous herbaceous perennials forming a clump of rounded, more or less palmately lobed leaves, with very small, star-shaped flowers in terminal panicles or racemes on erect stems
T. wherryi is a compact herbaceous perennial to 25cm in height, forming a clump of deeply 3-lobed, purple-tinted leaves with narrow, erect racemes of small, white or pinkish flowers from late spring
SE North America
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
Aspect North-facing or East-facing or West-facing
MoistureMoist but well-drained, Poorly-drained
SoilChalk, Loam, Clay
pHAcid, Alkaline, Neutral
Time to ultimate height
Ideally grow in cool, moist, humus-rich soil in partial or full shade but can tolerate a wide range of soils and can spread freely. Protect from excessive winter wet
Propagate by seed in pots in a cold frame as soon as seed is ripe or in spring. Propagate by division in spring
Suggested planting locations and garden types
Flower borders and beds Ground Cover Underplanting of Roses and Shrubs
Cottage & Informal Garden Rock Garden
Pests Slugs may be a problem
Generally disease free
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
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.