Overview
Gladiolus x colvillii 'Irish Gold' is a upright bulbs in the genus Gladiolus, part of the Iridaceae family, with green foliage. Gladiolus x colvillii 'Irish Gold' 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 x colvillii 'Irish Gold' is an upright bulbous plant in the iris family grown for its summer flowers. It has green foliage and flowers from July to September. Best placed in full sun on neutral loam that drains freely, it prefers a sheltered, south-, west- or east-facing spot. Use it where upright stems are wanted for cutting, borders or containers in gardens rated H5 (hardy).
About the genus
Gladiolus is a genus of perennial cormous flowering plants in the iris family (Iridaceae).
Wikipedia contributors, "Gladiolus", CC BY-SA 4.0 — Gladiolus
In the garden
Gladiolus x colvillii 'Irish Gold' is an upright bulbous cultivar in the Iridaceae valued for its summer flowering, which occurs from July to September. The plant's green leaves support the flowering display and focus the interest on the blooms during mid and late summer. Sit this gladiolus in a position that receives full sun and offers protection from the worst of the wind; a sheltered aspect to the south, west or east suits it. It performs on neutral loam that is well drained, so avoid heavy, waterlogged ground. The H5 hardiness rating indicates it is regarded as hardy for UK gardens. Its upright habit and suggested uses — cut flowers, borders and containers — make it practical where vertical summer colour and stems for floristry are needed. Allow for a planting site that is accessible for cutting if you plan to use blooms indoors between July and September. The plant's seasonality means it provides a steady source of material for summer arrangements throughout that period.
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 x colvillii 'Irish Gold' size, habit and characteristics
- Plant type
- Bulbs
- Habit
- Upright
- Foliage
- Green
- Suggested uses
- Cut flowers, Borders, Containers
Care notes
Pruning and caring for Gladiolus x colvillii 'Irish Gold'
- 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 x colvillii 'Irish Gold'?
Gladiolus x colvillii 'Irish Gold' prefers full sun. It suits sheltered positions.
What soil does Gladiolus x colvillii 'Irish Gold' need?
Gladiolus x colvillii 'Irish Gold' grows best in loam soil. It prefers neutral soil. Aim for soil that stays well-drained.
Is Gladiolus x colvillii 'Irish Gold' hardy in the UK?
Gladiolus x colvillii 'Irish Gold' 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 x colvillii 'Irish Gold'?
Division, Cormlets.
From the Fenn Plants journal
- Notes on DaffodilsWhen to plant daffodil bulbs in the UK, how deep, how to naturalise them in grass, why daffodils stop flowering (“blindness”), and why you should never mix cut daffodils with other flowers.
- Keeping Your NerveHow to garden through a heatwave — the best time to water, why deep soaks beat daily sprinkles, caring for pots and vulnerable plants, and why you can let the lawn go brown.
- Made to LastHow to clean, store and protect garden pots and planters — the frost-proof vs frost-resistant difference, winter care for terracotta and ceramic, and how to reuse a broken pot.
More in the Gladiolus genus
- Gladiolus 'Nicholas' (S)

- Gladiolus 'Rose Laguna'Sword Lily

- Gladiolus byzantinuseastern gladiolus, Byzantine gladiolus, Byzantine sword-lily
- Gladiolus callianthusAbyssinian gladiolus

- Gladiolus cardinaliswaterfall gladiolus

- Gladiolus dalenii 'Boone'

- Gladiolus liliaceusSword Lily

- Gladiolus primulinus