Overview
Gladiolus caucasicus is a upright bulbs in the genus Gladiolus, part of the Iridaceae family, with green foliage. Gladiolus caucasicus grows best in full sun, and tolerates loam soils and neutral pH. Its UK hardiness is rated H5. Suggested uses include cut flowers, borders and containers.
About
Gladiolus caucasicus is a cultivar of the Gladiolus genus, which comprises perennial plants growing from corms with clusters of long, narrow, sword-like green leaves. This upright bulb thrives in full sun and prefers well-drained, neutral loam soil in sheltered positions such as south-, west-, or east-facing aspects. Hardy to UK zone H5, it is best planted after the last frost, with corms set 10-15cm deep. Gladiolus caucasicus is suitable for borders, containers, and cut flowers, offering summer interest with its tall flower spikes bearing funnel-shaped blooms.
Growing conditions
Best soil and position for Gladiolus
- Sunlight
- Full sun
- Soil type
- Loam
- Soil pH
- Neutral
- Soil moisture
- Well-drained
- Aspect
- South-facing, West-facing, East-facing
- Exposure
- Sheltered
- UK hardiness
- H5
Plant details
Gladiolus caucasicus size, habit and characteristics
- Plant type
- Bulbs
- Habit
- Upright
- Foliage
- Green
- Suggested uses
- Cut flowers, Borders, Containers
Care notes
Pruning and caring for Gladiolus caucasicus
- Propagation
- Division, Cormlets
- Pest resistance
- Aphids, Slugs
- Disease resistance
- Botrytis, Fusarium bulb rot, Fungal leaf spot
Frequently asked questions
Where is the best place to plant Gladiolus caucasicus?
Gladiolus caucasicus prefers full sun. It suits sheltered positions.
What soil does Gladiolus caucasicus need?
Gladiolus caucasicus grows best in loam soil. It prefers neutral soil. Aim for soil that stays well-drained.
Is Gladiolus caucasicus hardy in the UK?
Gladiolus caucasicus 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 Gladiolus caucasicus?
Division, Cormlets.
More in the Gladiolus genus
- Gladiolus 'Adele'
- Gladiolus 'Adrenalin'PBR (L)
- Gladiolus 'Alexandra the Great'PBR
- Gladiolus 'Amber Mystique' (L)
- Gladiolus 'Andre Viette'
- Gladiolus 'Arctic Day' (M/E)
- Gladiolus 'At Night'PBR (L)
- Gladiolus 'August Days' (L)