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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:
the RHS today and get 12 months for the price of 9
Other common names
birthroot American shamrock
bathroot bethroot bloody nose bumblebee root death root dog flower ground lily herb Paris Indian balm lamb's quarters lamb's succory nosebleed orange blossoms red Benjamin squawroot stinking Benjamin true love
Trillium are rhizomatous, herbaceous perennials with erect stems bearing a whorl of ovate or diamond-shaped leaves, with one or more erect or nodding flowers borne at the stem apex
T. erectum is a perennial to 50cm in height, with erect stems each bearing a whorl of three broadly ovate leaves and a solitary, terminal, nodding deep maroon, occasionally white, flowers 5-9cm across in spring
E 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
SoilSand, Loam, Chalk
Time to ultimate height
Grow in deep, moist but well-drained, humus-rich, preferably acid to neutral soil in deep or partial shade. Mulch in autumn with leaf mould
Propagate by seed in pots in a shady cold frame as soon as seed is ripe; takes 5-7 years to reach flowering size. Propagate rhizomes by division after flowering or cut out the growing point from the rhizome after flowering, which stimulates the formation
Suggested planting locations and garden types
Flower borders and beds Underplanting of Roses and Shrubs
Pruning No pruning required
Pests Slugs and snails may be a problem
Generally disease free
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
Buy from £5.99
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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.
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Join the RHS today and get 12 months for the price of 9