Water Pennywort (Hydrocotyle umbellata) is a very common perennial aquatic weed that will form dense mats that creep along shorelines of ponds, lakes and marshes. It has bright green round leaves that alternate on a long stem. These circular leaves are typically the size of a half dollar. Long stems are attached at center of each leaf. Water Pennywort has delicate clusters of tiny 5-petaled white flowers. It reproduces from seed or roots. There is no known biological method of control.
Algae control in pon
On August 07 2014 at United States 11 Views