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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:
© RHS 1999
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Other common names
Clematis armandii var. biondiana
Clematis can be deciduous or evergreen shrubs or herbaceous perennials, mostly climbing by twining leaf-stalks, and often with showy flowers. Some have attractive fluffy seed-heads in autumn
C. armandii is a large, vigorous evergreen climber with leathery, dark glossy green trifoliate leaves up to 15cm long. Single fragrant creamy-white flowers 5-6cm across with creamy stamens, in clusters in early to mid spring.
C & W China
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
MoistureMoist but well-drained
SoilChalk, Clay, Sand, Loam
Time to ultimate height
Vigorous clematis for a warm south or south-west facing wall with protection from cold winds. Grow in any fertile, well-drained soil. Plant with the crown 5-8cm (2-3in) deep to encourage shoots to grow from below ground level. Keep the base shaded and cool by the careful positioning of plants or a layer of pebbles or flat stones
Propagate by layering, semi-hardwood cuttings or hardwood cuttings
Suggested planting locations and garden types
Pruning Pruning (clematis) group 1
Pests Young shoots may be troubled by aphids and caterpillars; petals can be eaten by earwigs
May suffer from Clematis slime flux
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Join the RHS today and get 12 months for the price of 9