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Iris pseudacorus and cvs. (Yellow flag)

Iris pseudacorus and cvs. Photo/Illustration: Courtesy of White Flower Farm

(Based on 1 user review)

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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11
Botanical Name: Iris pseudacorus and cvs. EYE-riss soo-DAY-kor-us Common Name: Yellow flag Genus: Iris
Yellow flag is a vigorous Laevigata iris with ribbed, sword-shaped gray-green leaves. It grows to 3 to 4 feet high. Over 60 cultivars exist, including ‘Beuron’, with evenly yellow flowers; ‘Ecru’, with its off-white blooms; ‘Fresh Cream’, with lovely, pale-yellow flowers marked with red-violet signals; a variegated type, ‘Variegata’; ‘Donau’, a bright-yellow flower adorned with a brown signal that looks like stitchery; and nearly sterile ‘Holden Clough’, with deep-yellow blooms and reddish purple veining.
 Noteworthy characteristics: Extremely adaptable. Self-seeds freely along streambanks and edges of ponds. Flourishes in both shallow and deeper waters.
 Care: Grow in full sun to part shade and most any moist soil. Cut flower spikes at the end of the growing season to prevent excessive self-seeding. Sterile cultivars exist.
 Propagation: Lift and divide clumps, or separate bulb offsets, and plant immediately, in early autumn.
 Problems: Iris borer, verbena bud moth, whiteflies, iris weevil, thrips, slugs and snails, aphids, and nematodes.
Height 3 ft. to 6 ft.
Growth Pace Fast Grower;Invasive/Aggressive Grower
Light Full Sun to Part Shade
Moisture Adaptable
Maintenance Moderate
Characteristics Self Seeds; Showy Flowers
Bloom Time Summer
Flower Color Yellow Flower
Uses , Beds and Borders, Cut Flower, Waterside
Style , Water Garden
Seasonal Interest , Summer Interest
Type ,Perennials

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