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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:
© RHS 2002
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Other common names
giant meadow saffron
Colchicum are cormous perennials with usually coarse, broadly strap-shaped leaves which appear with or after the goblet-shaped flowers
C. speciosum is a corm producing 1-3 deep purplish-rose flowers up to 8cm in length, with pale green or whitish tubes. Strap-shaped, rich green leaves to 25cm in length develop in spring
N Turk., Iran, Cauc.
Toxicity All parts are highly toxic by ingestion
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
MoistureWell-drained, Moist but well-drained
SoilSand, Clay, Chalk, Loam
pHAcid, Alkaline, Neutral
Time to ultimate height
May be naturalized in turf. Grow in moist but well-drained, deep, humus-rich, fertile soil. Intolerant of waterlogging
Propagate by seed sown in containers in an open frame when ripe or separate corms when dormant in summer
Suggested planting locations and garden types
Flower borders and beds Low Maintenance Underplanting of Roses and Shrubs
Cottage & Informal Garden Patio & Container Plants
Pruning No pruning required
Pests Slugs may be a problem
May be subject to bulb grey mould
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Join the RHS today and get 12 months for the price of 9