Clematis Happy Birthday ('Zohapbi'PBR) (LL)
clematis [Happy Birthday]
A deciduous climber, to 3m high, with green leaves and flowers, to 10cm across, of six sepals in deep purple, with redder mid-stripe, fading to cobalt-blue and creating a two-tone effect, from midsummer to autumn. Early flowers appear on the previous year's growth, later flowers on the current year's growth
Buy this plant
Size
Ultimate height
2.5–4 metresTime to ultimate height
2–5 yearsUltimate spread
1–1.5 metresGrowing conditions
Moisture
Moist but well–drainedpH
Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green Purple | |||
|---|---|---|---|---|
| Summer | Purple | Blue Purple | ||
| Autumn | Purple | Blue Purple | ||
| Winter |
Position
- Full sun
Aspect
South–facing or West–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
- Late Large-flowered clematis are deciduous climbers with large, star-shaped flowers to 15cm wide, opening on the current year's growth in summer and autumn
How to grow
Cultivation
Plant in a moisture-retentive, well-drained soil, with the crown 5-8cm deep to encourage new shoots to grow from below ground level; keep the base of the plant and the roots cool and shaded by other plants or a layer of pebbles or flat stones; see clematis cultivation for more advice
Propagation
Propagate by internodal leaf-bud semi-ripe cuttings taken from spring to late summer, or by layering from late winter to spring
Suggested planting locations and garden types
- Cottage and informal garden
- Patio and container plants
- City and courtyard gardens
- Flower borders and beds
- Hedging and screens
- 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.