Clematis virginiana L.
devil's darning needle
Large, vigorous, deciduous North American species herbaceous perennial or sub-shrub ranging in height from about 3-5-6m tall, with palmate pale to mid-green leaves 12cm long. Single, fragrant, star-shaped, pale green flowers 3cm across, mature to creamy-white or white, flowering from midsummer to autumn
Size
Ultimate height
4–8 metresTime to ultimate height
2–5 yearsUltimate spread
1.5–2.5 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green | |||
|---|---|---|---|---|
| Summer | Green White | Green | ||
| Autumn | Green | |||
| Winter |
Position
- Full sun
- Partial shade
Aspect
South–facing or West–facing or East–facing or North–facing
Exposure
Exposed or Sheltered Hardiness
H6Botanical details
- Family
- Ranunculaceae
- Native to GB / Ireland
- No
- Foliage
- Deciduous
- Habit
- Climbing
- Potentially harmful
- Skin irritant. Wear gloves and other protective equipment when handling. Pets (rabbits): Harmful if eaten. For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
- Genus
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
- Name status
Correct
How to grow
Cultivation
Plant in 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. Best grown into large trees or on screens and along fences. Plant with the crown 5-8cm deep to encourage new shoots to grow from below ground level. See clematis cultivation
Propagation
Propagate by softwood cuttings in spring, semi-ripe cuttings in early summer or layering
Suggested planting locations and garden types
- Cottage and informal garden
- Wildlife gardens
- Climber and wall shrubs
- Wall side borders
Pruning
Pests
May be susceptible to aphids, snails and caterpillars; petals may be eaten by earwigs
Diseases
May be susceptible to honey fungus (rarely), clematis wilt and clematis slime flux
Get involved
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.