Sago Pondweed:

Sago pondweed is a perennial aquatic plant.  It forms thick mats under the water’s surface; it does not have any floating leaves.   Sago pondweed has leaves that grow in thick layers and produces nut-like fruit that is 1/8” to 1/4” long.  The submerged stems of this plant provide a habitat for many micro and macro invertebrates which in turn provide food for fish and other wildlife.  Because sago pondweed reproduces by fragmentation, it can easily take over an entire body of water.  This can disrupt recreational activities such as boating, swimming, and fishing.  Sago pondweed can be treated with copper, endothall, and fluridone.