The best time to apply weed and feed to your lawn is generally during the spring and fall when temperatures are between 60°F and 90°F. These seasons are optimal because the grass is actively growing and able to absorb nutrients well, while weeds are more vulnerable to herbicides. More specifically:
- In spring, apply weed and feed after the weeds have started to appear and after mowing your lawn a few times.
- In fall, apply weed and feed before the lawn goes dormant, usually from late August to mid-October, depending on your region and grass type.
- Apply weed and feed on mild, windless days with no rain expected in the 24-72 hours afterward.
- Early morning or late afternoon/early evening are the best times of day for application, as dew helps the product stick and cooler temperatures prevent evaporation.
- Avoid applying more than twice a year and leave 30 to 60 days between applications.
Additional tips:
- For newly seeded lawns, wait until after mowing at least 2-3 times (around 2 months) before using weed and feed.
- Check product labels for specific instructions as timing and recommendations can vary by brand and formulation.
- Don't apply weed and feed just before heavy rain, as it can wash away the herbicide.
- If you miss the optimal spring window, a second application in fall can be effective.
Timing varies somewhat based on local climate and grass type, so you may want to consult local extension services for the best timing in your area.
