Clematis 'H.F. Young' (EL)
clematis 'H.F. Young'
A deciduous climber blooming in late spring to early summer and again in late summer to early autumn. The flowers are large, open stars, 15-18cm across, with six sepals opening mauve-blue ageing to Wedgwood blue, and pale yellow stamens
Size
Ultimate height
2.5–4 metresTime to ultimate height
2–5 yearsUltimate spread
0.5–1 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Blue | Green | ||
|---|---|---|---|---|
| Summer | Blue | Green | ||
| Autumn | Blue | Green | ||
| Winter |
Position
- Full sun
- Partial shade
Aspect
South–facing or North–facing or West–facing or East–facing
Exposure
Sheltered Hardiness
H6Botanical details
- Family
- Ranunculaceae
- Native to the UK
- 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
Accepted
- Horticultural Group
- Early Large-flowered clematis have large star-shaped flowers in early summer, often with a second flowering in late summer
How to grow
Cultivation
Plant in a sheltered position 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. Plant with the crown 5-8cm deep to encourage new shoots to grow from below ground level. Further clematis cultivation advice
Propagation
Propagate by layering, softwood cuttings or semi-hardwood cuttings
Suggested planting locations and garden types
- City and courtyard gardens
- Patio and container plants
- Cottage and informal garden
- Wall side borders
- Flower borders and beds
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.