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The Plant Guide

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Southern blue flag

Iris virginica

Lavender-pink or white flowers up to 4 inches in diameter have purple veins and yellow throats. Sword-shaped medium green leaves can top 6 feet tall when grown in shallow water.

Noteworthy CharacteristicsThis heat- and moisture-lover is native to coastal plains from Virginia to Louisiana. May be grown in a border if kept consistently moist.

CareProvide full sun to part shade and moist to wet soil.

PropagationLift and divide clumps, or separate bulb offsets, and plant immediately, in early autumn.

ProblemsIris borer, verbena bud moth, whiteflies, iris weevil, thrips, slugs and snails, aphids, and nematodes. Bacterial leaf blight and soft rot, crown rot, rhizome rot, leaf spot, rust, viruses, and scorch.

  • Genus : Iris
  • Plant Height : 3 to 6 feet
  • Zones : 5, 6, 7, 8, 9
  • Light : Full Sun to Partial Shade
  • Plant Type : Perennials
  • Flower Color : Pink, White
  • Bloom Time : Spring
  • Plant Seasonal Interest : Spring Interest
  • Moisture : Wet
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