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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
purple mountain saxifrage 'Theoden'
Saxifraga can be annuals, biennials, evergreen or herbaceous perennials, mostly mat-forming in habit, with simple or palmately lobed leaves and starry or rounded flowers which may be solitary of in panicles or cymes
Porphyrion section saxifrages are compact, cushion or mat-forming evergreen perennials with small, usually lime-encrusted leaves, and 5-petalled white, yellow or pink flowers in early summer
'Theoden' is a mat-forming evergreen perennial to 2cm in height, with oblong dark green leaves 3-5mm in length, and cup-shaped vivid purple flowers to 2cm in width held just above the leaves in early summer
Habit Mat forming
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
Aspect West-facing or East-facing
SoilChalk, Loam, Sand
Up to 10 cm
Time to ultimate height
Grow in humus-rich, moist but very well-drained, neutral to alkaline soil in partial shade. Can be grown in a pot in alpine house
Propagate by division in spring
Suggested planting locations and garden types
Gravel Garden Patio & Container Plants Rock Garden
Pruning No pruning required
Pests Aphids, slugs, vine weevil and glasshouse red spider mite may be a problem
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.
Join the RHS today and get 12 months for the price of 9