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.
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.
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Crocosmia FAQs
How much sun does Crocosmia need?
Crocosmia prefers full sun (6+ hrs direct).
When should I plant Crocosmia in the UK?
In the UK, plant Crocosmia in March, April. Planting in this window gives the roots time to establish before the plant is asked to grow away.
Is Crocosmia easy to grow?
Easy — good for beginners. 'Lucifer' is the famous fiery red — hummingbird magnet. Spreads — divide every 3-4 years.