Iris × hollandica
Iris × hollandica
Dutch irises produce elegant flowers on tall slender stems from May to June, available in blue, purple, yellow, white, and bronze. Excellent as cut flowers with stems lasting two weeks in water. Easy to grow in well-drained soil. Often sold as mixed colours. One of the most popular late spring bulbs for UK gardens.
Where to plant
Best aspect
Border position
When to plant and expect flowers
Plant
Flowers
How to grow iris × hollandica
Plant 10-12cm deep in autumn. Excellent cut flower lasting up to two weeks. Needs full sun and well-drained soil. May need winter protection in exposed sites. Plant in groups of 10+ for best display. Available in many colour combinations.
Soil requirements
Soil type
sand, loam, chalk
Moisture
well drained
pH
neutral, alkaline
Aftercare
Allow foliage to die back naturally after flowering. Remove spent flower heads to prevent self-seeding.
Propagation
- Offsets in autumn
- Seed
Wildlife value
Toxicity
Mildly toxic. Contains irisin compounds causing gastrointestinal upset if ingested.
Common problems
- Ink disease
- Bulb rot in wet soil
- May not reliably perennialise
Similar bulbs to grow
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