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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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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
Siberian iris 'Tropic Night'
Iris sibirica 'Tropic Night'
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
'Tropic Night' has delicate purple-blue flowers with white and yellow markings that are borne above clumps of linear foliage for several weeks in early summer
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 South-facing or West-facing or East-facing
Exposure Exposed or Sheltered
MoistureMoist but well-drained
SoilChalk, Clay, Sand, Loam
Time to ultimate height
This cultivar is suited for cultivation in both herbaceous borders and informal pond-side settings. Grow in moist but well-drained neutral to slightly acid loam in full sun or partial shade
Divide clumps in early spring or autumn
Suggested planting locations and garden types
Flower borders and beds Cut Flowers Low Maintenance
Cottage & Informal Garden
Pruning Deadhead after flowering. Cut back foliage in autumn
Pests Slugs and snails may be a problem
May be affected by aphid borne virus diseases
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
Siberian iris 'Tropic Night'
Buy from £7.99 at the RHS Plants Shop
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