composting with grass that was treated with a reemergent in March - Ask Extension
1. We put grass that was treated with a pre-emergent herbicide in our compost heap. We later used the compost in the garden. none of the seeds came ...
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composting with grass that was treated with a reemergent in March #749891
Asked May 14, 2021, 10:51 AM EDT
1. We put grass that was treated with a pre-emergent herbicide in our compost heap. We later used the compost in the garden. none of the seeds came up. Ia there any way to remediate the garden soil?
2. Can we transplant tomatoes, peppers, etc.that have already sprouted?
3. Could we add a layer of top soil over the present garden soil and plant seeds in that?
Hamilton County Ohio
Expert Response
Hello, this is a difficult question to answer without knowing the herbicide that was used.
You could try transplanting them but I wouldn't be able to tell you whether they would be safe; if you have the container or label, you may be able to find out whether the food is safe to eat.
Unfortunately, some herbicides can survive the composting process. If you know what was used, you may also be able to find out how long the herbicide will last in the soil. Depending on the herbicide, it may take months or longer for the herbicide to dissipate entirely.
Some labs will test for herbicides in the soil. This may be an option for you.
Your best course of action is to contact the manufacturer, if known, or the EPA if you have the details of what was used, and ask your questions directly to them.
You could try transplanting them but I wouldn't be able to tell you whether they would be safe; if you have the container or label, you may be able to find out whether the food is safe to eat.
Unfortunately, some herbicides can survive the composting process. If you know what was used, you may also be able to find out how long the herbicide will last in the soil. Depending on the herbicide, it may take months or longer for the herbicide to dissipate entirely.
Some labs will test for herbicides in the soil. This may be an option for you.
Your best course of action is to contact the manufacturer, if known, or the EPA if you have the details of what was used, and ask your questions directly to them.
