Grass clippings

Question

I put Feed in the Weed on my lawn earlier this year. Can I use my grass clippings now to mulch around my tomatoes in the garden or will this weed chemical that I put on the lawn a month and a half ago still be active and cause problems in the garden?

Answer 1

No you should not use the grass clippings from the lawn that were treated with a weed and feed treatment.
The herbicide may or can carry over the garden soil and plants.
This also goes for compost, do not compost treated lawn clippings.

https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/how-long-does-weed-killer-last-in-the-soil.htm