Iris pseudacorus (Yellow flag)

Cultivation

Plant in autumn in full sun or partial shade in moist to wet, humus-rich, acid soil at pond or stream margins. Site carefully as may naturalize and form large colonies. Tolerates neutral soil. Do not allow to dry out.

Suggested uses

Coastal, Beds and borders, Cottage/Informal, City, Low Maintenance, Wildlife, Waterside, Aquatic, Bees (attract & feed bees)

UK hardiness

H7

USDA zones

Zone 5, Zone 6, Zone 7, Zone 8

Sunset zone

4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 1, 2, 3, A2, A3

WUCOLS

North-Central Coastal = Unknown
Central Valley = Unknown
South Coastal = Unknown
South Inland = Unknown
High and Intermediate Desert = Unknown
Low Desert = Unknown

Foliage

Deciduous

Habit

Erect, Clump-forming

Native to

Caucasus, Europe, Iran, Northern Africa, Russia, Siberia, Turkey

Drought tolerant

No

Flood tolerant

Yes

Toxicity

Severe stomach discomfort may result if ingested.