Killing Weeds in Vegetable Garden - Knowledgebase Question

Louisville, KY
Question by elross016
September 25, 1998
It's about time to clear my vegetable garden and plant a cover crop (I usually plant winter rye). Can I use Roundup to kill out weeds before planting the winter rye? If so, how long should I wait after using Roundup before I plant the winter rye seeds?


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Answer from NGA
September 25, 1998

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Yes you can. Check the Roundup label. It usually will state how long to wait after treatment before replanting. I would suggest you give the Roundup 7 days to work before mowing or rototilling the area. After mixing the dead weeds with the soil, wait another 7 to 10 days for the herbicide to tie up in the soil and break down into harmless materials. This should give more than enough time to remove any risk to the seeds and transplants you set out.
Once again, check the label. It is the final authority.

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