Chara algea colol5/9/2023 ![]() Stem is hollow, red colored with many leaves covered by minute soft hairs on both sides.Ironically, blue-green algae are not algae at all! Water primroses can grow to 5 to 6 feet tall. ![]() Smartweed commonly grows in shallow water along shorelines.Ĭreeping Water Primrose The plant is generally found in shallow water. The plants may be emergent in shallow water or completely submersed with only the flowers visible above the surface. Smartweed Smartweed flowers in midsummer with dense pink, rose, or white flowers held erect above the water. It is found in swampy areas and has a purplish color. Purple Loosestrife Purple loosestrife is an invasive weed that is visible usually starting in July in many areas of Minnesota. It is leafy with triangular or round stems and may have a cluster of brownish flowers and seeds at the end. The plant is long and slender and produces a brown stalk.īulrush Bulrush is usually found along the shoreline. Watershield Watershield has a subtle purple flower and the leaves are two to five inches in size.Ĭattail Cattails are emergent weeds that are usually found in swampy areas. Yellow Water Lily (Spatterdock) Yellow water lilies have a yellow flower and the leaves are heart shaped. Problem Solvers: Fluridone, Navigate Granular The leaves are large and circular and float on top of the water. White Water Lily White water lily plants produce white flowers. Watermeal Watermeal is similar to duckweed that much smaller – the size of the lead of a pencil and floats on the surface of bodies of water. Giant Duckweed Giant Duckweed has multiple roots and the underside is usually red. Problem Solvers: Clipper Herbicide, Fluridone, Reward Diquat The leaves grow in whorls of four to eight.Ĭommon Duckweed Duckweed is green in color, with a round leaf the size of an eraser on a pencil and floats on the surface. Hydrilla Hydrilla is an exotic plant that easily grows to the surface and forms dense mats. Plant height in variable from a few inches to three feet. The plants are free floating, sometimes attached in mud. Water Hyacinth Water Hyacinth is a real problem in the Southern United States. Water Stargrass Water Stargrass has long stems and has light yellow star shaped flowers. The shape elliptical and the surface is waxy. Sago Pondweed Sago Pondweed’s stem is somewhat red, slender and branched.Īmerican Pondweed American Pondweed has stems that reach up to two inches. Problem Solvers: Clipper Herbicide, Fluridone Largeleaf Pondweed Largeleaf pond weed has broad leaves and thick, large stems. Problem Solvers: Clipper Herbicide, Reward Diquat, Fluridone Problem Solvers: Fluridone, Clipper Herbicide, Aquathol Super KĬoontail Coontail resembles the tail of a raccoon and is olive to dark green in color. It is submerged except for its floral spike.Ĭurly-Leaf Pondweed Curlyleaf pondweed is an invasive weed with alternately arranged walloped edges. Northern Watermilfoil Northern Watermilfoil has purple brown stems and can be simple or branched. Problem Solvers: Fluridone, Clipper Herbicide, Reward Diquat, Navigate Granular The leaves are oval shaped.īushy Pondweed-Naiads Bushy pondweed is purple-green in color and the stem is slender and brittle.Įurasian Watermilfoil Eurasian watermilfoil is an invasive weed that mats at the surface making recreation very difficult. Problem Solvers: Hydrothol, Navigate GranularĮloeda Eloeda (Canada waterweed) is dark green in color and has a small white flower. Wild Celery Wild celery resembles ribbons and shapes growing above the surface of the water. It is caused by a parasite penetrating the skin. Swimmers Itch Swimmers itch is common in our area from early spring to mid-July. It looks like someone spilled green paint in the body of water.Ĭhara-Branched Algae Chara is an algae that is rooted and usually does not grow taller than two feet. Planktonic Algae Planktonic algae usually is visible during long, heat periods usually in later summer. Problem Solvers: Citrine Plus, Citrine Plus Granular, Hydrothol Problem Algaeįilamentous – Algae Filamentous algae appears on the surface usually as “hair-like” and can often be thick and appear as if “bubbling”. If you need help controlling pond weeds, please call 65. We have provided a list of common lake and pond weeds found in Minnesota. The first step in pond weed control is identifying the type(s) of invasive species growing your water.
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