Clematis × diversifolia 'Blue Boy' (I)
Deciduous, clump-forming herbaceous (non-climbing) clematis, to about 2m high, with pinnately divided green leaves. Scrambling stems are topped with widely bell-shaped, pale violet blue flowers to 7.5cm across, with recurved tips and wavy edges, from midsummer to early autumn
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Size
Ultimate height
1.5–2.5 metresTime to ultimate height
2–5 yearsUltimate spread
1–1.5 metresGrowing conditions
Moisture
Moist but well–drained, Well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green | |||
|---|---|---|---|---|
| Summer | Purple Blue | Green | ||
| Autumn | Purple Blue | Green | ||
| Winter |
Position
- Full sun
Aspect
South–facing or West–facing
Exposure
Exposed or Sheltered Hardiness
H6Botanical details
- Family
- Ranunculaceae
- Native to GB / Ireland
- No
- Foliage
- Deciduous
- Habit
- Bushy
- 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
Accepted
- Horticultural Group
- Integrifolia Group clematis are woody-based subshrubs with non-climbing or semi-climbing herbaceous stems, and bell-shaped or flat flowers on the current year's growth, in summer and early autumn
How to grow
Cultivation
Plant herbaceous (non-climbing) clematis at soil level in moisture-retentive, well-drained soil in full sun, with the roots and base of the plant in shade. Ideal for growing through plants in the herbaceous border or through low shrubs for support. See clematis cultivation
Propagation
Propagate by division or take basal softwood cuttings of herbaceous clematis in spring
Suggested planting locations and garden types
- Cottage and informal garden
- Flower borders and beds
Pruning
See clematis pruning: group three. Cut back hard before growth begins in early spring
Pests
May be susceptible to aphids. Cutworms and voles may cut young stems
Diseases
May be susceptible to honey fungus (rarely), clematis wilt and clematis slime flux
Get involved
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