Overview
Incarvillea altissima is a clump-forming herbaceous perennial in the genus Incarvillea, part of the Bignoniaceae family, with deciduous foliage. Incarvillea altissima grows best in full sun, and tolerates loam soils and neutral pH. Its UK hardiness is rated H5. Suggested uses include rock gardens and herbaceous borders.
About
Incarvillea altissima is a clump-forming deciduous cultivar within the Incarvillea genus, known for its tubular, trumpet-like blooms. It thrives in full sun on a south-facing, sheltered aspect, preferring well-drained, neutral loam soil. Hardy to UK zone H5, this cultivar is suitable for rock gardens and mixed herbaceous borders. It flowers in summer and autumn, adding seasonal interest to garden settings. Cultivation requires fertile, moist soil, and propagation can be achieved by seed or division.
Growing conditions
Best soil and position for Incarvillea
- Sunlight
- Full sun
- Soil type
- Loam
- Soil pH
- Neutral
- Soil moisture
- Well-drained
- Aspect
- South-facing
- Exposure
- Sheltered
- UK hardiness
- H5
Plant details
Incarvillea altissima size, habit and characteristics
- Plant type
- Herbaceous Perennial
- Habit
- Clump-forming
- Foliage
- Deciduous
- Suggested uses
- Rock gardens, herbaceous borders
Care notes
Pruning and caring for Incarvillea altissima
- Propagation
- Seed, division
- Pest resistance
- Generally pest-resistant
- Disease resistance
- Generally disease-resistant
Frequently asked questions
Where is the best place to plant Incarvillea altissima?
Incarvillea altissima prefers full sun. It suits sheltered positions.
What soil does Incarvillea altissima need?
Incarvillea altissima grows best in loam soil. It prefers neutral soil. Aim for soil that stays well-drained.
Is Incarvillea altissima hardy in the UK?
Incarvillea altissima 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 Incarvillea altissima?
Seed, division.
More in the Incarvillea genus
- Incarvilleahardy gloxinia
- Incarvillea sinensis
- Incarvillea beresowskii
- Incarvillea grandiflora
- Incarvillea himalayensis 'Nyoto Sama'