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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
Helleborus corsicus Helleborus lividus subsp. corsicus
Helleborus can be rhizomatous, herbaceous or semi-evergreen perennials forming a clump of pedate basal leaves, or evergreen with erect, leafy stems. Large, bowl-shaped flowers are borne in loose clusters in late winter or spring
H. argutifolius is an evergreen perennial to 1m with stout stems bearing leaves composed of three spiny-toothed dark green leaflets. Bowl-shaped, nodding, pale green flowers 4-5cm in width are borne in large open clusters
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 North-facing or South-facing or East-facing or West-facing
MoistureMoist but well-drained
SoilClay, Loam, Chalk
Time to ultimate height
Thrives in neutral to alkaline soils that are moist, fertile and humus-rich. Partial shade is ideal but can tolerate full sun. Provide shelter from strong, cold winds. Mulch annually in autumn
Propagate by seed in pots in a cold frame as soon as seed is ripe
Suggested planting locations and garden types
Flower borders and beds Cut Flowers Underplanting of Roses and Shrubs
Cottage & Informal Garden
Pruning Remove faded or damaged foliage as the flowers appear
Pests Prone to hellebore aphid and snails
May be affected by hellebore leaf spot and a virus
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
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