About
Clematis 'Allanah' is a deciduous climbing plant that reaches heights of 2 to 4 meters. It features green foliage and produces single blooms measuring 10 to 18 centimeters in diameter. The flowers display a rich red hue accented by a deeper red stripe in the center and are complemented by dark stamens. This plant blooms from early summer through autumn.
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
- Alkaline, Neutral
- Soil moisture
- Moist but well-drained
- Aspect
- South-facing, North-facing, East-facing, West-facing
- Exposure
- Exposed, Sheltered
- UK hardiness
- H6
Plant details
- Plant type
- Climber Wall Shrub
- Habit
- Climbing
- Foliage
- Deciduous
- Height
- 2.5-4 metres
- Spread
- 1-1.5 metres
- Time to full height
- 2-5 years
- Suggested uses
- Patio and container plants, City and courtyard gardens, 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 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
- Pruning
- Pruning (clematis) group 2
- Propagation
- Propagate by internodal leaf-bud semi-ripe cuttings taken from spring to late summer, or by layering from late winter to spring
- 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