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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
grass widow purple-eyed grass
purple rush lily purple snowdrop spring bell spring satin flower
Sisyrinchium grandiflorum Sisyrinchium douglasii
Olsynium are fibrous-rooted, clump-forming perennials. They have mostly basal, stem-clasping, linear or lance-shaped leaves and nodding trumpet to bell-shaped flowers in spring
O. douglasii produces slender, upright stems sheathed with grass-like leaves. The flowers are 2cm long, nodding, bell-shaped and a rich purple with a satiny texture. They appear in early spring
W Canada W USA
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
MoistureMoist but well-drained
pHAlkaline, Neutral, Acid
Time to ultimate height
Grow in moist, humus-rich, moderately fertile soil in semi-shade
Propagate by seed sown in containers in a cold frame in autumn
Suggested planting locations and garden types
Gravel Garden Patio & Container Plants Rock Garden
Pruning No pruning required
Pests Generally problem free
Generally problem free
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.