Yellow iris (Iris pseudacorus)
 Native Substitutes:
 Control Methods  
Mechanical
 Chemical
 Biological
Digging to eliminate vegetative spreading Spraying with glyphosate (Rodeo in aquatic areas) None

 

           
 
Appearance: Perennial aquatic emergent forb, grows 2-3' tall along shores. Leaves: Broad, flat, sword-shaped, stalkless, leaves embracing flower stalk. Flower: Deep yellow, 2 or 3 on one stalk; flower stalk round, shorter than outer leaves; three outer drooping sepals with brownish mottled markings surrounding the true flower. Blooms May-July. Seed: Capsule containing numerous smooth, flattened seeds. Root: Reproduces vegetatively through creeping rhizomes.
Yellow iris competes with native emergent vegetation. It is a Eurasian plant that is still sold commercially for use in garden pools.

Legal Status: This plant is an unlisted exotic species in Minnesota and is subject to review by the Department of Natural Resources before it may be placed or planted into a free-living state, such as into public waters. It is currently being proposed for regulated exotic species status.