Overview
Incarvillea grandiflora is a clump-forming herbaceous perennial in the genus Incarvillea, part of the Bignoniaceae family, with deciduous foliage. Incarvillea grandiflora 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 grandiflora is a clump-forming deciduous cultivar within the Incarvillea genus, known for its tubular, trumpet-like blooms. This plant thrives in full sun on a south-facing, sheltered aspect, preferring well-drained, neutral loam soil. Hardy to UK zone H5, it is suitable for rock gardens and mixed herbaceous borders. Incarvillea grandiflora is best planted after the last frost in fertile soil and can be propagated by seed or division, offering seasonal interest throughout spring and summer.
About the genus
Incarvillea is a genus of about 16 species of flowering plants in the family Bignoniaceae, native to central and eastern Asia, with most of the species growing at high altitudes in the Himalaya and Tibet. The most familiar species is Incarvillea delavayi, a garden plant commonly known as hardy gloxinia or Chinese trumpet flower. Unlike most other members of Bignoniaceae, which are mainly tropical woody plants, species of Incarvillea are herbaceous perennial plants from temperate regions.
Wikipedia contributors, "Incarvillea", CC BY-SA 4.0 — Incarvillea
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 grandiflora 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 grandiflora
- Propagation
- Seed, division
- Pest resistance
- Generally pest-resistant
- Disease resistance
- Generally disease-resistant
Frequently asked questions
Where is the best place to plant Incarvillea grandiflora?
Incarvillea grandiflora prefers full sun. It suits sheltered positions.
What soil does Incarvillea grandiflora need?
Incarvillea grandiflora grows best in loam soil. It prefers neutral soil. Aim for soil that stays well-drained.
Is Incarvillea grandiflora hardy in the UK?
Incarvillea grandiflora 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 grandiflora?
Seed, division.
More in the Incarvillea genus
- Incarvillea maireiMaire's hardy gloxinia
- Incarvillea mairei 'Bees' Pink'
- Incarvillea mairei 'Frank Ludlow'
- Incarvillea mairei 'Nyoto Sama'
- Incarvillea olgae
