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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.
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Other common names
Siberian iris 'White Swirl'
Iris sibirica 'White Swirl'
Iris may be rhizomatous or bulbous perennials, with narrow leaves and erect stems bearing flowers with 3 large spreading or pendent fall petals, alternating with 3 erect, often smaller, standard petals, in late winter, spring or early summer
Sibirica irises are rhizomatous perennials, to 1.2m tall, with narrow leaves and erect stems bearing up to 5 beardless flowers 6-7cm wide in early summer. Form and colour vary considerably among cultivars
An herbaceous perennial with narrowly linear leaves and pure white flowers, flushed with yellow at the base of the falls, in early summer
Toxicity Ingestion may cause severe discomfort. Wear gloves and wash hands after handling
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 West-facing or East-facing
Exposure Exposed or Sheltered
MoistureMoist but well-drained, Poorly-drained
SoilChalk, Clay, Loam, Sand
Time to ultimate height
Grow in moist but well-drained neutral to slightly acid loam in full sun or partial shade
Propagate by division from midsummer to early autumn, plant immediately in flowering positions
Suggested planting locations and garden types
Cut Flowers Low Maintenance Flower borders and beds
Cottage & Informal Garden
Pruning Cut back after flowering
Pests Slugs and snails may be a problem
May be affected by aphid borne virus diseases, iris rhizome rot and grey moulds
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.