Submerged aquatic plants lack stem rigidity when removed from the water, are generally rooted and in most cases make up the majority of nuisance conditions that interfere with human activities. Keep in mind prior to treating submuerged plants that they can be a driving force to maintaining water quality by providing oxygen, long-term storage of nutrients, fish cover and a valuable food source for wildlife. At least 15 to 20% of a pond's or lake's surface area should contain aquatic submerged plants.

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Common Submersed Weeds:

Wild Celery - (Vallisneria americanai)

Wild Celery , also called tape or eel grass. Leaves are ribbon like and dark green. Looks similar to turf grass but grows two to three times larger.
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Elodea - (Elodea canadensis)

Also known as Canada waterweed, elodea grows entirely underwater, except for a small white flower that blooms during the summer. Has branched stems, leaves are usually dark green color. Leaves are oval shaped and arranged in clusters of three or four around the stem.
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Various Pondweeds (Potamogetons)

There are about 80 species of pondweeds in the world including Sago Pondweed, Curly-Leaf Pondweed, Large Leaf Pondweed, American Pondweed, Illinois Pondweed and more. Various potamogeton pondweed species posess unique characteristics such as; size, shape, color, ecological benefit, growing depth, etc.
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Eurasian Watermilfoil (Myriophyllum spicatum)

Unfortunately this exotic plant is established in most states. It grows densely forming surface mats that prohibit recreation and displace desirable native plants communities. More Information & Product Recommendations

Northern Watermilfoil (Myriophyllum exalbescens)

Occurs throughout North America. Stem is hollow with whorled leaves along entire length of plant. Pairs of leaflets will not exceed ten. See also Eurasian watermilfoil. Navigate herbicide is the best choice to control this weed. If growing with a variety of other plants, we recommend a broad spectrum herbicide.
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Coontail (Ceratophyllum demersum)

Coontail gets its name from its resemblance to the tail of a raccoon. Lacking true roots this plant can also be found floating. Differentiated from milfoils by forked, not feathery leaves.
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Water Stargrass (Zosterella spp.) (formerly Heteranthera dubia)

Water Stargrass has long stems and leaves that are grass like in appearance. The flower is small, yellow and star-shaped. Water Stargrass is found throughout the United States. More Information & Product Recommendations

Hydrilla (Hydrilla verticillata)

Hydrilla is an exotic plant that easily grows to the surface and forms dense mats. The stems are long and branched. The leaves grow in whorls of four to eight. Looks very similar to Brazilian Elodea.
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Cabomba (Fanwort) (Cabomba caroliniana)

Fanwort prefers lakes and ponds, but can also be found in slow-moving rivers, streams, sloughs and ditches. Fanwort primarily reproduces via regrowth of stem or rhizome fragments, but can reproduce via seed. Fanwort can form dense stands that clog drainage systems and interfere with swimming and boating. More Information & Product Recommendations

Widgeon Grass (Ruppia maritima)

Widgeon grass belongs to the ditch-grass family (Ruppiaceae) and is a submersed aquatic grass. The stems are simple or branched, and the leaves are alternate and threadlike. The leaves reach a maximum length of 10 cm (4 in) and width of 0.6 mm. More Information & Product Recommendations