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Iris Pseudacorus

Iris pseudacorus

aquatic

Yellow flag iris is a vigorous, moisture-loving perennial with tall sword-like green foliage and bright yellow flowers blooming in late spring to early summer. It is highly adaptable and commonly used in wetlands, pond margins, and water gardens. This species is very hardy and can be invasive in some regions due to its aggressive rhizomatous growth.

Iris Pseudacorus

Common Problems

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Slow Growthchevron_right
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Yellow Leaveschevron_right

Care Guide

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Light
Full sun to partial shade; 5+ hours of direct sunlight for optimal flowering
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Water
Constantly wet to waterlogged soil required; grows in shallow water (up to 12 inches deep) or boggy margins. Highly water-tolerant and adaptable
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Soil
Tolerates a wide range of soils; humus-rich, fertile soil with high moisture retention preferred. Can grow in poor soil and clay
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Fertiliser
Light to moderate feeding in spring; balanced or nitrogen-rich fertilizer supports vigorous growth
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Temperature
Very cold-hardy; tolerates a wide temperature range; thrives in cool to moderate conditions
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Humidity
Very high humidity; thrives in aquatic and wetland environments

Toxicity

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Non-toxic; all parts are generally safe, though rhizomes should not be ingested in quantity

Common Diseases

coronavirusLeaf Spotchevron_rightcoronavirusRoot Rotchevron_right

Common Pests

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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.

Iris Pseudacorus Care Guide — Iris pseudacorus | GreenScout