About
Clematis 'H.F. Young' is a deciduous vine that flowers in two distinct periods: from late spring to early summer and again from late summer to early autumn. Its blooms are large, star-shaped, measuring 15-18 cm in diameter. Each flower features six sepals that begin as a mauve-blue color and transition to a Wedgwood blue as they mature, complemented by pale yellow stamens.
About the genus
Clematis includes a variety of plants, ranging from deciduous and evergreen shrubs to herbaceous perennials. Many of these species are climbers, utilizing twining leaf stalks for support, and they frequently produce prominent flowers. In the fall, certain varieties develop appealing fluffy seed heads.
Growing conditions
- Sunlight
- Full sun, Partial shade
- Soil type
- Chalk, Clay, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained
- Aspect
- South-facing, North-facing, West-facing, East-facing
- Exposure
- Sheltered
- UK hardiness
- H6
Plant details
- Plant type
- Climber Wall Shrub
- Habit
- Climbing
- Foliage
- Deciduous
- Height
- 2.5-4 metres
- Spread
- 0.5-1 metres
- Time to full height
- 2-5 years
- Suggested uses
- City and courtyard gardens, Patio and container plants, Cottage and informal garden
- Toxicity
- 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
Care notes
- 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
- Pruning
- Pruning (Clematis) Group 2
- Propagation
- Propagate by layering, softwood cuttings or semi-hardwood cuttings
- Pest resistance
- May be susceptible to aphids, snails and caterpillars; petals may be eaten by earwigs
- Disease resistance
- May be susceptible to honey fungus (rarely), clematis wilt and clematis slime flux