Water Iris Yellow
Iris pseudacorus
aquaticA vigorous marginal aquatic iris featuring bright yellow flowers that bloom in late spring to early summer. Also known as Yellow Flag Iris, this plant is highly adaptable to wetland conditions and shallow water zones. It spreads readily through rhizomes and creates dense, architectural clumps of sword-like green foliage.
Common Problems
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Care Guide
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Light
Full sun to partial shade (minimum 5 hours of direct sunlight for optimal blooms)
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Water
Plant in shallow water 0–9 inches deep or boggy, consistently wet soil
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Soil
Heavy clay, loam, or specialized aquatic soil; tolerates poor fertility better than other iris species
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Fertiliser
Light feeding; apply diluted aquatic fertilizer monthly during growth if desired, though often thrives without supplemental feeding
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Temperature
Very hardy; tolerates freezing and harsh winters; deciduous or semi-evergreen depending on zone
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Humidity
Thrives in high humidity and permanently wet conditions; excellent for water's edge
Toxicity
check_circleSafe for Catscheck_circleSafe for Dogscheck_circleSafe for Children
Non-toxic; rhizomes may cause mild stomach upset if ingested in large quantities but generally safe
Common Diseases
Common Pests
Seasonal Care
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Resume regular watering and feeding as growth picks up.
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Peak growing season. Water and feed regularly.
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Reduce watering as growth slows. Stop heavy feeding.
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Minimal watering and feeding. Protect from frost if needed.