Overview
Clematis hirsutissima is a climbing climber wall shrub in the genus Clematis, part of the Ranunculaceae family, with deciduous foliage. Clematis hirsutissima grows best in full sun, and tolerates most soils and any pH. Its UK hardiness is rated H7. Suggested uses include climbers, walls, fences, obelisks, pergolas, trees, containers and mixed borders.
About
Clematis hirsutissima is a species of flowering plant in the buttercup family known by the common name hairy clematis or vase flower. It is a perennial herb that is native to much of the western United States, from Washington to Nebraska. It is a small, erect plant which, unlike other Clematis, does not generally produce vines. It is quite variable in appearance, especially across varieties. Grow it in full sun and most soil types. In UK gardens it is fully hardy throughout the UK (RHS H7). It works well for climbers, walls, fences, obelisks, pergolas, trees, containers and mixed borders. It tolerates soil of any pH, moist but well-drained conditions and north-facing, south-facing, east-facing and west-facing aspects. Plant in moisture-retentive, well-drained soil, with the roots and base of the plant kept cool and shaded by other planting or a layer of pebbles. Grow in full sun or partial shade. See clematis cultivation.
Wikipedia contributors, CC BY-SA 4.0 — Clematis hirsutissima
Growing conditions
Best soil and position for Clematis
- Sunlight
- Full sun
- Soil type
- Sandy, Loamy, Clay
- 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
- H7
Plant details
Clematis hirsutissima 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 hirsutissima
- 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 hirsutissima?
Clematis hirsutissima prefers full sun. It suits exposed and sheltered positions.
What soil does Clematis hirsutissima need?
Clematis hirsutissima is adaptable and grows happily in most soil types, including sandy, loamy and clay. It is happy in soil of any pH. Aim for soil that stays moist but well-drained.
Is Clematis hirsutissima hardy in the UK?
Clematis hirsutissima has an RHS hardiness rating of H7, meaning it is fully hardy throughout the UK, tolerating temperatures below -20°C.
How do I propagate Clematis hirsutissima?
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)