How to grow Bearded Iris in the UK
Iris germanica
Bearded Iris (Iris germanica) is a flower that grows well in UK gardens. Plant rhizomes ON the soil surface — burying them rots them. Divide every 3-4 years for best flowers. This guide covers when and how to sow Bearded Iris, the soil and position it likes, watering and feeding, companion planting, and when to harvest.
Type
Flowers
Difficulty
Moderate
Position
full sun (6+ hrs direct)
Sow
spring
Harvest
—
When to sow & grow Bearded Iris
Sowing and harvest window through the year (UK):
Jan | Feb | Mar | Apr | May | Jun | Jul Plant | Aug Plant | Sep | Oct | Nov | Dec |
Soil, position & care
- Soil
- Fertile, moisture-retentive but free-draining soil
- Soil pH
- 6.0–7.5
- Position
- Sun or part shade depending on species
- Sowing depth
- Plant at the same depth as the pot
- Spacing
- 30–60 cm apart
- Sowing
- Plant container-grown stock spring or autumn; divide established clumps in spring
- Growing
- Water well the first season until established; mulch in spring
- Harvest & upkeep
- Cut back faded foliage in late autumn or early spring; divide every 3–4 years
- Watch for
- Slugs and snails on new shoots; otherwise robust
Companion planting for Bearded Iris
No specific companion notes for this plant.
Grow Bearded Iris this year
Add Bearded Iris to your free 12-month plan and get watering & sowing reminders — no sign-up needed.
Bearded Iris FAQs
How much sun does Bearded Iris need?
Bearded Iris prefers full sun (6+ hrs direct).
Is Bearded Iris easy to grow?
Moderate. Plant rhizomes ON the soil surface — burying them rots them. Divide every 3-4 years for best flowers.