General Culture:
Grow in medium to wet soils in full sun to part shade. This iris may be grown in up to 2-4” of shallow standing water (muddy bottom or containers), or in moist shoreline soils or in constantly moist humusy soils of a border. Propagate by division after bloom. Wear gloves when dividing the rhizomes. After fall frost, plant leaves may be trimmed back to about 1” above the crown. Will naturalize to form colonies in the wild.
Noteworthy Characteristics:
Iris veriscolor is a clump-forming iris that is native to marshes, swamps, wet meadows, ditches and shorelines from Manitoba to Nova Scotia south to Virginia, Ohio, Illinois and Minnesota. It is a marginal aquatic plant that forms a clump of narrow, arching-to-erect, sword-shaped, blue-green leaves (to 24” long and 1” wide). Flowering stalks rise from the clump to 30” tall in late spring, typically producing 3-5 violet-blue flowers per stalk. Flowers have white and yellow markings at the sepal bases. Clumps spread slowly and naturalize by tough, creeping rhizomes. Veriscolor means having various colors.
Problems:
No serious insect or disease problems. Susceptible to a number of insect pests including aphids, iris borer and iris thrips. Susceptible to a number of diseases including various rots and viruses.
Uses:
Best grouped in sunny areas of ponds or water gardens. Also may be grown in moist border areas.
© Missouri Botanical
Garden, 2001-2010
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