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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
Yellow Flag Iris (Iris Pseudacorus) — Iris pseudacorus thrives in USDA Hardiness Zones 4 through 9 and is ideal for planting along pond margins; orYellow 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 spread of up toYellow Flag Iris (Iris Pseudacorus) — Adds visual interest and naturalizes readily; proudly displays three drooping sepals or "falls," adorned with, image 131Yellow Flag Iris (Iris Pseudacorus) — perennial for full or half; making it not only a visual asset but also a contributor to environmental health, image 100Yellow Flag Iris (Iris Pseudacorus) — with individual leaves about 1 to 1.5 inches wide; iris pseudacorus thrives in USDA Hardiness Zones 4 through 9 and isYellow Flag Iris (Iris Pseudacorus) — perennial with yellow blooms+153

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) — ideal for water features with its vibrant yellow blooms and sword-like green foliage; during its blooming season from May
Yellow Flag Iris (Iris Pseudacorus) — Iris pseudacorus thrives in USDA Hardiness Zones 4 through 9 and is ideal for planting along pond margins; or
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 spread of up to
Yellow Flag Iris (Iris Pseudacorus) — Adds visual interest and naturalizes readily; proudly displays three drooping sepals or "falls," adorned with, image 131
Yellow Flag Iris (Iris Pseudacorus) — perennial for full or half; making it not only a visual asset but also a contributor to environmental health, image 100
Yellow Flag Iris (Iris Pseudacorus) — with individual leaves about 1 to 1.5 inches wide; iris pseudacorus thrives in USDA Hardiness Zones 4 through 9 and is
Yellow Flag Iris (Iris Pseudacorus) — perennial with yellow blooms
Yellow Flag Iris (Iris Pseudacorus) — or "standards," that taper elegantly to a point.<br><br>Adapted to wet conditions; sword-like foliage that, image 91
Yellow Flag Iris (Iris Pseudacorus) — showy flowers that boast a brilliant yellow hue; adds visual interest and naturalizes readily
Yellow Flag Iris (Iris Pseudacorus) — with individual leaves about 1 to 1.5 inches wide; iris pseudacorus thrives in USDA Hardiness Zones 4 through, image 110
Yellow Flag Iris (Iris Pseudacorus) — contrasted by three upright petals; ideal for water features with its vibrant yellow blooms and sword-like, image 115
Yellow Flag Iris (Iris Pseudacorus) — with individual leaves about 1 to 1.5 inches wide; iris pseudacorus thrives in USDA Hardiness Zones 4 through, image 60
Yellow Flag Iris (Iris Pseudacorus) — yellow flowers in the garden
Yellow Flag Iris (Iris Pseudacorus) — Prefers full sun to part shade in wet, marshy conditions; perennial for full or half, image 129
Yellow Flag Iris (Iris Pseudacorus) — with individual leaves about 1 to 1.5 inches wide; iris pseudacorus thrives in USDA Hardiness Zones 4 through, image 135
Yellow Flag Iris (Iris Pseudacorus) — contrasted by three upright petals; ideal for water features with its vibrant yellow blooms and sword-like, image 90
Yellow Flag Iris (Iris Pseudacorus) — Adds visual interest and naturalizes readily; proudly displays three drooping sepals or "falls," adorned with a striking
Yellow Flag Iris (Iris Pseudacorus) — showy flowers that boast a brilliant yellow hue
Yellow Flag Iris (Iris Pseudacorus) — and some states have regulations concerning its cultivation.<br><br>Ecologically; despite its preference for, image 71
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, image 84
Yellow Flag Iris (Iris Pseudacorus) — Prefers full sun to part shade in wet, marshy conditions; perennial for full or half, image 54
Yellow Flag Iris (Iris Pseudacorus) — perennial for full or half; making it not only a visual asset but also a contributor to environmental health, image 125
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, image 59
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, image 109
Photographs by 13 contributors

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