Fanwort is a submerged invasive aquatic plant that can form dense mats at the water surface. The delicate green underwater leaves are fan-like and average 2 inches across. ... The white or cream flowers are ½” wide and form during May through September; however, some variations of Fanwort have pinkish or purplish flowers.

Is Fanwort an invasive plant?

Fanwort is considered an invasive species outside of its indigenous regions and can cause disruption to aquatic environments and economies. Most of fanwort's negative impacts are due to its dense foliage.

Where is Fanwort found?

Fanwort is an invasive aquatic plant native to the southeastern United States and parts of South America. Today, it has invaded parts of the Crowe River watershed in central Ontario, as well as waters in the northern United States, Asia, and Australia.