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Yellow Flag Iris

Iris Pseudacorus

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Overview

The Yellow Flag Iris (Iris pseudacorus) is a captivating perennial, ideal for water features with its vibrant yellow blooms and sword-like green foliage. Thriving in zones 4-9, it reaches 3-4 feet in height with a spread of up to 2 feet. Prefers full sun to part shade in wet, marshy conditions. Caution: Invasive in some areas, so check local guidelines. Adds visual interest and naturalizes readily.

Sun Full, HalfWater Extra in Summer, MediumZones 2–9Type PerennialClimate Temperate
Yellow Flag Iris (Iris Pseudacorus) — ideal for water features with its vibrant yellow blooms and sword-like green foliage; during its blooming season from May

Culture

Sun
Full, Half
Water
Extra in Summer, Medium
USDA zones
2–9

Shape & size

Classification

Type
Perennial
Family
Iridaceae
Climate
Temperate

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Photos (160)

Yellow Flag Iris (Iris Pseudacorus) — Caution: Invasive in some areas, so check local guidelines; is a vibrant perennial that offers both aesthetic appeal and
Yellow Flag Iris (Iris Pseudacorus) — withstanding water depths of up to 4 inches over the crown; yellow flowers in the garden, image 118
Yellow Flag Iris (Iris Pseudacorus) — Care should be taken as it can be invasive in certain regions; showy flowers that boast a brilliant yellow hue, image 70
Yellow Flag Iris (Iris Pseudacorus) — proudly displays three drooping sepals or "falls," adorned with a striking brown or purple veining; care, image 114
Yellow Flag Iris (Iris Pseudacorus) — During its blooming season from May to July; perennial with yellow blooms, image 86
Yellow Flag Iris (Iris Pseudacorus) — spanning 3 to 4 inches across
Yellow Flag Iris (Iris Pseudacorus) — Thriving in zones 4-9, it reaches 3-4 feet in height with a spread of up to 2 feet
Yellow Flag Iris (Iris Pseudacorus) — proudly displays three drooping sepals or "falls," adorned with a striking brown or purple veining; care should be taken
Yellow Flag Iris (Iris Pseudacorus) — Prefers full sun to part shade in wet, marshy conditions; perennial for full or half, image 104
Yellow Flag Iris (Iris Pseudacorus) — is a vibrant perennial that offers both aesthetic appeal and ecological value to any landscape design; and, image 57
Yellow Flag Iris (Iris Pseudacorus) — and some states have regulations concerning its cultivation.<br><br>Ecologically; despite its preference for, image 121
Yellow Flag Iris (Iris Pseudacorus) — Despite its preference for full sun, it can tolerate partial shade, where it may produce fewer flowers; caution: Invasive
Yellow Flag Iris (Iris Pseudacorus) — and some states have regulations concerning its cultivation.<br><br>Ecologically; despite its preference for, image 96
Yellow Flag Iris (Iris Pseudacorus) — The Yellow Flag Iris (Iris pseudacorus) is a captivating perennial
Yellow Flag Iris (Iris Pseudacorus) — sword-like foliage that can reach a height of approximately 3 to 4 feet; with individual leaves about 1 to 1.5 inches wide
Yellow Flag Iris (Iris Pseudacorus) — spanning 3 to 4 inches across, image 63
Yellow Flag Iris (Iris Pseudacorus) — perennial with yellow blooms; contrasted by three upright petals
Yellow Flag Iris (Iris Pseudacorus) — Care should be taken as it can be invasive in certain regions; showy flowers that boast a brilliant yellow hue, image 95
Yellow Flag Iris (Iris Pseudacorus) — This robust plant is known for its striking; thriving in zones 4-9, it reaches 3-4 feet in height with a, image 58
Yellow Flag Iris (Iris Pseudacorus) — showy flowers that boast a brilliant yellow hue; adds visual interest and naturalizes readily, image 87
Yellow Flag Iris (Iris Pseudacorus) — The Yellow Flag Iris (Iris pseudacorus) is a captivating perennial; prefers full sun to part shade in wet, image 51
Yellow Flag Iris (Iris Pseudacorus) — Thriving in zones 4-9, it reaches 3-4 feet in height with a spread of up to 2 feet; withstanding water depths of up to 4
Yellow Flag Iris (Iris Pseudacorus) — This robust plant is known for its striking
Yellow Flag Iris (Iris Pseudacorus) — spanning 3 to 4 inches across, image 138
Photographs by 15 contributors

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