Overview
Clematis williamsii is a climbing climber wall shrub in the genus Clematis, part of the Ranunculaceae family, with deciduous foliage. Clematis williamsii grows best in full sun and partial shade, and tolerates most soils and any pH. Its UK hardiness is rated H5. Suggested uses include climbers, walls, fences, obelisks, pergolas, trees, containers and mixed borders.
About
Clematis williamsii is a deciduous climbing plant within the Clematis genus, known for its twining leaf stalks that support its growth. It thrives in full sun or partial shade and is adaptable to a variety of soil types, including chalk, clay, loam, and sand, provided the soil is moist but well-drained. Hardy to UK zone H5, it is suitable for planting against walls, fences, obelisks, pergolas, trees, or in containers and mixed borders. This cultivar is best grown with its roots kept cool and shaded, and it offers interest during the spring and summer seasons.
Growing conditions
Best soil and position for Clematis
- Sunlight
- Full sun, Partial shade
- Soil type
- Chalk, Clay, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained
- Aspect
- North-facing, South-facing, East-facing, West-facing
- Exposure
- Exposed, Sheltered
- UK hardiness
- H5
Plant details
Clematis williamsii size, habit and characteristics
- Plant type
- Climber Wall Shrub
- Habit
- Climbing
- Foliage
- Deciduous
- Suggested uses
- Climbers, Walls, Fences, Obelisks, Pergolas, Trees, Containers, Mixed borders
Care notes
Pruning and caring for Clematis williamsii
- Propagation
- Cuttings, Layering, Seed
- Pest resistance
- Aphids, Capsid bugs, Caterpillars, Earwigs
- Disease resistance
- Powdery mildew, Clematis wilt
Frequently asked questions
Where is the best place to plant Clematis williamsii?
Clematis williamsii prefers full sun and partial shade. It suits exposed and sheltered positions.
What soil does Clematis williamsii need?
Clematis williamsii is adaptable and grows happily in most soil types, including chalk, clay, loam and sand. It is happy in soil of any pH. Aim for soil that stays moist but well-drained.
Is Clematis williamsii hardy in the UK?
Clematis williamsii has an RHS hardiness rating of H5, meaning it is hardy in most of the UK, tolerating -15 to -10°C.
How do I propagate Clematis williamsii?
Cuttings, Layering, Seed.
More in the Clematis genus
- Clematis 'Albiflora' (A)
- Clematis 'Amanda Marie' (Vt)
- Clematis 'Andante' (I)
- Clematis 'Anna' (EL)
- Clematis 'Annette's Seedling'
- Clematis 'Apricot Star' (M)
- Clematis 'Basilisk'
- Clematis 'Betty Risdon' (EL)