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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 1984
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Other common names
Indian bean tree catawba
common catalpa eastern catalpa Indian cigar smoking bean
Catalpa catalpa Catalpa syringaefolia
Catalpa are deciduous trees of spreading habit, with handsome, large leaves and erect panicles of showy, bell-shaped flowers in late summer, followed by persistent, slender bean-like seed capsules
C. bignonioides is a spreading medium-sized deciduous tree, with pale green, broad-ovate leaves to 25cm in length. Flowers 3-4cm in width, white, marked with orange and purple, in conical panicles. Fruit a slender bean-like pod
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
Aspect North-facing or East-facing or South-facing or West-facing
MoistureWell-drained, Moist but well-drained
SoilSand, Clay, Chalk, Loam
pHAcid, Alkaline, Neutral
Higher than 12 metres
wider than 8 metres
Time to ultimate height
Grow in a moist but well-drained, fertile soil in a sunny position; will tolerate a heavy clay soil. Shelter from strong winds as these may shred the large leaves. Protect from late spring frosts when young
Propagate by seed, softwood cuttings or grafting
Suggested planting locations and garden types
Flower borders and beds Low Maintenance
Architectural Cottage & Informal Garden
Pruning Pruning group 1
Pests Generally pest free
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.
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Join the RHS today and get 12 months for the price of 9