Join the RHS today and support our charity
Free personalised gardening advice
RHS members get reduced ticket prices
RHS members get free access to RHS Gardens
Reduced prices on RHS Garden courses and workshops
020 3176 5800
Mon – Fri | 9am – 5pm
Make a donation
I have forgotten my password
Keep me signed in
Register for free to receive our newsletters, add comments to blogs/articles and to save content.
See what events are on near you and browse your bookmarked pages.
Don’t miss out - book in advance and save
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:
This plant will provide nectar and pollen for bees and the many other types of pollinating insects.
It is included in an evolving list of plants carefully researched and chosen by RHS experts. Divided into 3 groups these lists, linked below, are maintained by a team of RHS staff and are reviewed annually.
© RHS 1999
the RHS today and get 12 months for the price of 9
Other common names
Clematis orientalis misapplied Clematis vernayi
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 seedheads in autumn
C. tibetana subsp. vernayi is a large, strong-growing deciduous climber with glaucous-green foliage. Single nodding greenish-yellow flowers sometimes orange in colour, with thick sepals and dark reddish-brown stamens floewring midsummer to early autumn. Prominent silky seed-heads after flowering
Nepal & 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 or North-facing or East-facing
Exposure Sheltered or Exposed
MoistureMoist but well-drained
SoilChalk, Clay, Sand, Loam
Time to ultimate height
Plant in a moisture-retentive, well-drained soil, with the roots and base of the plant kept cool and shaded by other plants or a layer of pebbles at the base. Plant with the crown 5-8cm (2-3in) deep to encourage new shoots to grow from below ground level
Propagate by layering or semi-hardwood cuttings
Suggested planting locations and garden types
Pruning Pruning (clematis) group 3
Pests Young shoots may be troubled by aphids and caterpillars; petals can be eaten by earwigs
May suffer from Clematis slime flux
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.
Join the RHS today and get 12 months for the price of 9