How to grow Crocosmia in the UK
Crocosmia 'Lucifer'
Crocosmia (Crocosmia 'Lucifer') is a flower that grows well in UK gardens. 'Lucifer' is the famous fiery red — hummingbird magnet. Spreads — divide every 3-4 years. This guide covers when and how to sow Crocosmia, 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 Crocosmia
Sowing and harvest window through the year (UK):
Jan | Feb | Mar Plant | Apr Plant | May | 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 Crocosmia
No specific companion notes for this plant.
Grow Crocosmia this year
Add Crocosmia to your free 12-month plan and get watering & sowing reminders — no sign-up needed.
Crocosmia FAQs
How much sun does Crocosmia need?
Crocosmia prefers full sun (6+ hrs direct).
Is Crocosmia easy to grow?
Easy — good for beginners. 'Lucifer' is the famous fiery red — hummingbird magnet. Spreads — divide every 3-4 years.