How to grow Gladiolus in the UK
Gladiolus
Gladiolus (Gladiolus) is a flower that grows well in UK gardens. Plant successionally fortnight-by-fortnight for 6+ weeks of cut flowers. Lift corms in autumn except in mildest gardens. This guide covers when and how to sow Gladiolus, the soil and position it likes, watering and feeding, companion planting, and when to harvest.
Type
Flowers
Difficulty
Easy — good for beginners
Position
full sun (6+ hrs direct)
Sow
spring
Harvest
—
When to sow & grow Gladiolus
Sowing and harvest window through the year (UK):
Jan | Feb | Mar | Apr Plant | May Plant | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
Soil, position & care
- Soil
- Rich, free-draining soil
- Soil pH
- 6.0–7.5
- Position
- Full sun and shelter
- Sowing depth
- 10–15 cm deep (varies by type)
- Spacing
- 10–30 cm apart
- Sowing
- Plant in spring after frost; lift tender types (dahlia, gladioli) before winter in cold areas
- Growing
- Water and feed in growth; stake tall types
- Harvest & upkeep
- Deadhead; lift and store tender bulbs/tubers over winter where frosts are hard
- Watch for
- Slugs, earwigs and aphids on soft growth
Companion planting for Gladiolus
No specific companion notes for this plant.
Grow Gladiolus this year
Add Gladiolus to your free 12-month plan and get watering & sowing reminders — no sign-up needed.
Gladiolus FAQs
How much sun does Gladiolus need?
Gladiolus prefers full sun (6+ hrs direct).
Is Gladiolus easy to grow?
Easy — good for beginners. Plant successionally fortnight-by-fortnight for 6+ weeks of cut flowers. Lift corms in autumn except in mildest gardens.