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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
the RHS today and get 12 months for the price of 9
Other common names
Washington palm Californian washingtonia
cotton palm desert fan palm northern washingtonia
Washingtonia are large evergreen palms with stout solitary trunks bearing long-stalked, rounded leaves palmately divided into linear segments, and large, arching panicles of flowers, followed by small, berry-like black fruits
W. filifera is a tree-like palm with a stout trunk to 20m, and arching, narrow-lobed, fan-shaped leaves 2-3m in length; flowers creamy-white, in large panicles
S. California, W. Arizona, Mexico
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
Aspect East-facing or North-facing
Higher than 12 metres
Time to ultimate height
Grow under glass in a loam-based compost with equal parts added pulverised bark and organic matter, in bright light but with protection from the sun. Water moderately and provide moderate humidity when in growth and apply a liquid fertiliser monthly during the summer. Water sparingly in winter
Propagate by seed sown at not less than 24ºC
Suggested planting locations and garden types
Architectural Patio & Container Plants
Pruning No pruning required
Pests May be attacked by glasshouse red spider mite and scale insects
Generally disease free
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
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Join the RHS today and get 12 months for the price of 9