Four to six weeks
People also ask
When can I plant grass seed after applying weed and feed?
The best time to plant grass seed after applying weed and feed depends on whether the weed and feed used contained a pre-emergent or post-emergent herbicide. For weed and feed products containing post-emergent, systemic weed killers, you can plant grass seed as soon as two weeks after application.
How long after weed and feed can I mow my lawn?
It is also recommended to wait a few days after applying weed and feed to mow your lawn again. Mowing the lawn instantly after weed and feed application does no good to your lawn. The granules of weed and feed product get collected in the mower bag, and don鈥檛 have any time to work before the mower picks them up.
Can you put grass seed over weed and feed?
When applying seed over a weed and feed application, remember that some weed and feeds can prevent grass seeds from growing. It’s important to know a little about herbicides so you can make the best choice for when to apply seed in an area that has been treated for weeds.
How long does it take for weed and feed to work?
The pre-emergent herbicides in the product will hinder the growth of grass and prevent it from germinating. You should wait for three to four weeks after applying weed and feed before you reseed the bare spots in your lawn. Watering the lawn after weed and feed application washes out the granules before they have a chance to work.