Iris pseudacorus 'Variegata'

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Iris pseudacorus 'Variegata'

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Kemper Code: V910

Common Name: yellow flag
Zone: 5 to 9
Plant Type: Herbaceous perennial
Family: Iridaceae
Missouri Native: No
Native Range: None
Height: 2 to 5 feet
Spread: 1.5 to 2 feet
Bloom Time: May - June
Bloom Color: Yellow
Sun: Full sun to part shade
Water: Medium to wet
Maintenance: Low

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Plant Culture and Characteristics

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Where is this species invasive in the US?

Uses:		Wildlife:	Flowers:	Leaves:	Fruit:
Hedge	Suitable as annual	Attracts birds	Has showy flowers	Leaves colorful	Has showy fruit
Shade tree	Culinary herb	Attracts	Has fragrant flowers	Leaves fragrant	Fruit edible
Street tree	Vegetable	hummingbirds	Flowers not showy	Good fall color	Other:
Flowering tree	Water garden plant	Attracts	Good cut flower	Evergreen	Winter interest
Gr. cover (<1')	Will naturalize	butterflies	Good dried flower		Thorns or spines

General Culture:

Easily grown in average, medium to wet soils in full sun to part shade. Loves acidic, saturated, moisture-retentive soils. Thrives in standing water (up to 12” deep) where it prefers full sun and will naturalize easily to form large colonies. Grow in containers in water gardens. Although it prefers constant moisture, it grows surprisingly well in average garden soils, albeit less vigorously, particularly if given some light afternoon shade. Soils should never be allowed to dry out, however. Remove seed pods to prevent any unwanted self-seeding.

Noteworthy Characteristics:

This yellow flag cultivar is a rhizomatous perennial iris which grows in expanding clumps to 2-4’ (occasionally to 5’) tall. Plant height is directly proportional to the amount of soil moisture. Spring is the peak ornamental time for this plant: newly emerging, sword-shaped, linear, green leaves are variegated with bright yellow striping and yellow irises (2-5” across) with brown markings on the falls bloom on rigid, upright scapes. Leaf variegation tends to fade by summer. Species roots have been used in the past for a variety of purposes including medical treatments, dyes and inks, and snuff. Species’ seeds have been used as a coffee substitute (no caffeine however).

Problems:

No serious insect or disease problems.

Uses:

Moist boggy areas of water gardens including standing water. Peripheries of streams and ponds. Borders as long as soil moisture requirements can be met.