Join the RHS today and support our charity
Free personalised gardening advice
RHS members get reduced ticket prices
RHS members get free access to RHS Gardens
Reduced prices on RHS Garden courses and workshops
020 3176 5800
Mon – Fri | 9am – 5pm
Help us achieve our goals
Make a donation
I have forgotten my password
Keep me signed in
Register for free to receive our newsletters, add comments to blogs/articles and to save content.
See what events are on near you and browse your bookmarked pages.
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
greater masterwort astrantia
great black masterwort melancholy gentleman black hellebore
Astrantia biebersteinii Astrantia carniolica major
Astrantia are clump-forming herbaceous perennials with palmately lobed basal leaves and branched, erect, wiry stems bearing compact umbels of tiny flowers surrounded by a rosette of showy bracts
A. major is an erect, clump-forming perennial with scarcely 3-5-lobed leaves, and flower stems to 60cm, bearing flower heads in stalked, compound umbels. Clusters of tiny, whitish-green flowers are surrounded by petal-like bracteoles which are whitish, tinged with green and pink, with conspicuous veining. Several subspecies of this plant have contributed to the many garden selections
C & E Europe
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 East-facing or West-facing
Exposure Sheltered or Exposed
MoistureMoist but well-drained, Well-drained
pHAcid, Alkaline, Neutral
Time to ultimate height
Best grown in moist, fertile, preferably humus-rich soil in sun or part shade; drier conditions tolerated
Propagate by seed in containers in a cold frame as soon as ripe or propagate by division in spring
Suggested planting locations and garden types
Underplanting of Roses and Shrubs Flower borders and beds
City & Courtyard Gardens Cottage & Informal Garden
Pruning Cut back after flowers have faded to tidy and encourage a fresh flush of leaf growth
Pests May be affected by slugs and aphids
Powdery mildews may be troublesome
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.
Join the RHS today and get 12 months for the price of 9