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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
common comfrey alum
backwort black root blackwort Bohemian comfrey bone-set bruisewort comfrey consound gum plant healing herb knit-back
Symphytum are rhizomatous herbaceous perennials, sometimes invasive, with large leaves and nodding clusters of tubular flowers
S. officinale is a robust, rather invasive perennial forming a clump of erect stems bearing elliptic leaves to 25cm in length, and terminal clusters of nodding, tubular bell-shaped, purple, pink or cream flowers 2cm in length in late spring and summer
Europe & temperate Asia
Habit Spreading / Branched
Toxicity Ingestion may cause severe discomfort
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 North-facing or West-facing or East-facing
Exposure Exposed or Sheltered
MoistureMoist but well-drained, Poorly-drained
SoilChalk, Clay, Sand, Loam
pHAcid, Alkaline, Neutral
Time to ultimate height
Grow in moderately fertile, moist soil in sun or partial shade. Makes good groundcover but can become invasive, so site with care
Propagate by division of fleshy roots in spring. Propagate by root cuttings in early winter. Propagate by seed sown in pots in a cold frame in autumn or spring
Suggested planting locations and garden types
Low Maintenance Underplanting of Roses and Shrubs
Wildflower meadow Wildlife Gardens
Pruning Cut back after flowering to encourage neat, young foliage
Pests Generally pest free
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.