Clematis Bonanza ('Evipo031'PBR) (Vt)
clematis [Bonanza]
a vigorous, deciduous late-flowering climber to 3m in height with ovate, mid-green leaves. It produces many star-like, blue-purple flowers with pale yellow stamens from midsummer to early autumn
Size
Ultimate height
2.5–4 metresTime to ultimate height
2–5 yearsUltimate spread
0–0.1 metreGrowing conditions
Moisture
Moist but well–drained, Well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green | |||
|---|---|---|---|---|
| Summer | Blue Purple | Green | ||
| Autumn | Blue Purple | Green | ||
| Winter |
Position
- Full sun
- Partial shade
Aspect
South–facing or West–facing or North–facing or East–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
Trade
- Horticultural Group
- Viticella Group are deciduous climbing shrubs with usually pinnate leaves, and nodding, single to double, open-bell-shaped flowers of small to medium-size, produced on the current year's growth in summer and early autumn
How to grow
Cultivation
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 deep to encourage new shoots to grow from below ground level. Can be grown in containers at least 45cm deep and wide in a peat-free, loam-based potting compost. See also clematis cultivation
Propagation
Propagate by layering or semi-hardwood cuttings
Suggested planting locations and garden types
- Cottage and informal garden
- Patio and container plants
- City and courtyard gardens
- Low Maintenance
- Hedging and screens
- Flower borders and beds
- Underplanting of roses and shrubs
- Wall side borders
Pruning
Pruning (clematis) group 3 - Cut back last year's stems to a pair of strong buds 20cm above soil level before new growth begins in early spring
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.