Aquacide Blog — aquatic herbicide

A Good Overall Weed & Algae Control Option for Small Ponds

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A Good Overall Weed & Algae Control Option for Small Ponds

A customer recently contacted us regarding weed & algae control. Below is the question and our response. Question: I have 2 ponds with a couple of types of vegetation and some algae growing in them. Nothing invasive, just native species, but they are getting a bit out of control. What do you recommend for general treatment for each of these situations? The ponds are cold, very clear water, 1-3 ft deep and about 20’ x 20’ in size. Fish, frogs and kids spend lots of time in them. Thank you. EE, Jackson, WY Answer: Harvester Liquid is a fast-acting aquatic herbicide that...

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Aquatic Weed Control: 3 Ways to Kill Water Pennywort

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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. 3 control methods: 1)  Physical removal is an option for seed and root reduction. This method can be difficult...

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Aquatic Weed Control: 3 Ways To Kill Horned Pondweed

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Horned Pondweed (Zannichellia palustris) is a submersed aquatic weed found in every state in the continental United States. It can be found in shallow freshwater lakes and ponds. Horned Pondweed is a delicate, underwater perennial with branched slender stems that sprout from creeping rhizomes. Long thread-like leaves are smooth edged without teeth. They grow from ½ to 3 inches long and are oppositely arranged or whorled on the stem. Leaves gradually taper to a point at the tip. Tiny banana shaped, slightly curved seeds are flattish in shape and serrated on one side.  They attach to the stem at the...

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Aquatic Weed Control: 2 Ways To Kill Pickerelweed

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Pickerelweed (Pontederia cordata) is an emersed aquatic weed that grows 3-4 feet tall. Leaves are large and shiny with a heart-shaped base. Each leaf has very fine veins is attached toon its own stem in clusters. Pickerelweed is easily recognized by its beautiful 4” spike of blue-purple flowers. Each flower has 6 petal-like parts united below into a tube.  Flowers bloom from June through November and attract insects, bees and butterflies. Pickerelweed reproduces from seed & rhizomes rooted in the mud. Control methods: 1)  Aquacide Pellets are a 2,4-D based, systemic aquatic weed killer that is best-applied early spring as new...

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Lack of Herbicide Use, Killed Fish?

Algae Control aquatic herbicide aquatic weed control lake weed tratment lake weeds Water Weed Rake weed control Weed Razer weeds

Hundreds, possibly thousands of crappie, walleye, bass and muskie were found in November, belly-up under the ice in Owasso Lake, Shoreview, Minnesota. One of the even measured 48 inches long! Shoreview homeowners thought low water levels from the recent drought caused low oxygen levels which killed the fish. Rumors also spread that aquatic herbicides used for lake weed treatment were the culprit. The DNR did confirm individual permits are issued to property owners for aquatic weed control, however, the last treatments were made in August, and had no on the fish after treatment. A spokesman for DNR also stated there...

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