Yellow Water Iris

Genus: Iris

Species: pseudacorus

Description: Yellow-flowered Iris grows to a height of .4-1.5 meters (1.3-5 ft) tall. Has stiff, sword-like leaves.

Where it grows: Grows along stream banks, lake or pond edges, or into marshlands.

How it spreads: Spread is likely from the break-up of rhizomes or from its abundantly produced seeds.

What it threatens: Can colonize in large numbers and form dense single-species stands, out competing native wetland plants and excluding native animals.

More information: 4 County Cooperative Weed Management Association

Disclaimer - Clean Water Services does not endorse or recommend specific herbicides for use in controlling these species. To protect water quality, always follow herbicide label directions and obey application laws when using any herbicide.