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aquatic weed killer
Posted on 8/16/23 at 10:34 am
Posted on 8/16/23 at 10:34 am
Does anyone know of a good weed/brush killer that is safe to spray around a 1 acre pond that has fish, turtles, etc.
4
Posted on 8/16/23 at 11:55 pm to tigergrl
Diquat is a stone cold killer.
Posted on 8/17/23 at 12:04 am to tigergrl
Are you asking about weeds growing within the pond water itself along the shoreline (emergent aquatic vegetation), or weeds that are actually growing on the bank margin but not in the water per se. It’s always helpful to know what type of weeds you are trying to control, e.g., cattails, etc. before suggesting a specific herbicide.
But in general, the vast majority herbicides, particularly those labeled for aquatic use, when used according to label directions are “safe” (non-toxic) to fish, and certainly safe for air-breathing turtles. Insecticides are totally different ballgame relative to the toxicity question.
But in general, the vast majority herbicides, particularly those labeled for aquatic use, when used according to label directions are “safe” (non-toxic) to fish, and certainly safe for air-breathing turtles. Insecticides are totally different ballgame relative to the toxicity question.
Posted on 8/17/23 at 12:09 am to tigergrl
From my experience this summer:
Diquat quickly kills the part of the plant that it touches, but doesn't kill the whole plant, so it grows back.
Aquatic glyphosate works its way through the whole plant and eventually kills the whole thing, but it takes time.
It has been a slow process getting my pond back in order, but I'm just about there. Horrible overgrowth of cow lillies and grass growing about 8' out into the pond. Make sure you are only spraying 1/3 of the pond at a time or the decay could suck up all the oxygen in the water and kill your fish.
Diquat quickly kills the part of the plant that it touches, but doesn't kill the whole plant, so it grows back.
Aquatic glyphosate works its way through the whole plant and eventually kills the whole thing, but it takes time.
It has been a slow process getting my pond back in order, but I'm just about there. Horrible overgrowth of cow lillies and grass growing about 8' out into the pond. Make sure you are only spraying 1/3 of the pond at a time or the decay could suck up all the oxygen in the water and kill your fish.
Posted on 8/17/23 at 12:42 pm to CrawDude
I have a mixture of both and I don't know the names of any of it. I do have some stuff that is growing into the pond with small purple flowers on it ( that comes every year) then I have something new this year that is growing very thick and tall, very big stalk with small yellow flowers. I have an aquatic book, I'll try to look to see if I can identify.
Posted on 8/17/23 at 12:46 pm to indytiger
this year has been horrible with the banks around our pond, we skipped some weed eating and it seems like it grew so quick and very thick, out of control.
We got it all cut down but we want to spray something to help kill roots and not come back. What is growing out into the pond we have had to rake out in the past. Was hoping there may be something to kill it. Didn't think about only spraying part of the pond at a time. Great advice!
We got it all cut down but we want to spray something to help kill roots and not come back. What is growing out into the pond we have had to rake out in the past. Was hoping there may be something to kill it. Didn't think about only spraying part of the pond at a time. Great advice!
Posted on 8/17/23 at 7:31 pm to tigergrl
AquaPlant out of Texas A&M might help you with identification and chemical control suggestions LINK as well as this Univ of Florida website LINK
But as stated glyphosate (“Roundup”) that is labeled for use in aquatic environments (Rodeo) can be effective, 2,4 D formulations and others can be effective. Diquat as mentioned is a good aquatic herbicide but a contact herbicide, not a systemic, so it doesn’t kill plant roots - better used control simple aquatic weeds like duckweed.
Dangerous in this heat to kill to many plants present in the water b/c even though herbicide is safe for fish, the potential for oxygen depletion from decaying vegetation present in the water can cause a fish kill. As stated by another poster you need to treat smaller areas of the pond, exceeding on more 1/3 of the bank margin, at a time, waiting a few weeks before moving to another area.
But as stated glyphosate (“Roundup”) that is labeled for use in aquatic environments (Rodeo) can be effective, 2,4 D formulations and others can be effective. Diquat as mentioned is a good aquatic herbicide but a contact herbicide, not a systemic, so it doesn’t kill plant roots - better used control simple aquatic weeds like duckweed.
Dangerous in this heat to kill to many plants present in the water b/c even though herbicide is safe for fish, the potential for oxygen depletion from decaying vegetation present in the water can cause a fish kill. As stated by another poster you need to treat smaller areas of the pond, exceeding on more 1/3 of the bank margin, at a time, waiting a few weeks before moving to another area.
Posted on 8/18/23 at 12:27 am to tigergrl
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