Make a donation
Join the RHS today and support our charity
Read our latest features
Free access to RHS Gardens
and access to member show days
Reduced prices on RHS Garden courses and workshops
Books & Gifts
Register for free to receive our newsletters, add comments to blogs/articles and to save content.
020 3176 5800
Mon – Fri | 9am – 5pm
Make a donation
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:
© RHS 2003
the RHS today and get 12 months for the price of 9
Other common names
Algerian iris Algerian winter iris
Iris may be rhizomatous or bulbous perennials, with narrowly 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
I. unguicularis is a vigorous evergreen rhizomatous perennial to 30cm in height, with copious dark green leaves and very fragrant, deep violet flowers 5-8cm in width, the falls marked with white and deep yellow at the base, in late winter
N Africa to SW Asia
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 East-facing or West-facing
Exposure Exposed or Sheltered
SoilClay, Loam, Sand, Chalk
Time to ultimate height
Grow in well-drained or sharply drained neutral or slightly alkaline soil. Ideal at the base of a sunny wall
Propagate by division from midsummer to early autumn, plant immediately in flowering positions
Suggested planting locations and garden types
Banks and Slopes Flower borders and beds Cut Flowers Wall-side Borders
City & Courtyard Gardens Coastal Cottage & Informal Garden Patio & Container Plants
Pruning Cut back after flowering
Pests Slugs and snails may be a problem
May be subject to bacterial soft rot, grey moulds and a virus
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.
Like this page on facebook
Click on the Tweet button below to compose your tweet.
Join the RHS today and get 12 months for the price of 9