Reseeding Your Lawn with Roundup® Weed & Grass Killer Products

Has a weedy, dry, damaged lawn got you down? Wish you could just start your lawn over with a clean slate? Well, you can! A reseeding project is a great way to get a thick, green lawn you can actually enjoy—and Roundup® Weed & Grass Killer products can help.

Step-by-Step Instructions for Reseeding Your Lawn

1. Clear the Area

About 2 weeks before you plan to reseed your lawn, mix Roundup® Weed & Grass Killer Concentrate Plus in a tank sprayer and treat the entire area to be reseeded. Use 6 fl. oz. (12 Tbs.) per gallon of water for each 300 sq. ft. and apply evenly over the treatment area. If green patches remain after 7 days, reapply. After everything is completely dead, rake the area to prepare area for planting seed.

2. Prep for planting

If your soil is really compact, now is a great time to core aerate. After aerating, rake the area level, loosen the top ¼ inch of soil, then spread a 1-inch layer of compost evenly across the entire planting area.

3. Select your grass seed

Choose a grass seed variety that's right for your location. Do you need a cool-season grass that stays green during cooler temperatures in the North? Or would you be better off with a warm-season grass that stays green during the hot summer months in the South? You'll also want to consider potential wear and tear from kids and pets, and how much sun your yard gets. If you need help finding the right grass seed for your growing conditions, check with your local garden center.

4. Spread the seed

Once your soil is prepped and you've selected your grass seed, it's time to seed. Fill up your spreader with grass seed, adjust the spreader settings according to the label directions, and apply.

5. Feed your new lawn

After spreading the grass seed, apply a granular lawn fertilizer specially formulated for seeding. That way, those developing grass seedlings will get much-needed nutrients so their young root systems can grow deeper, faster.

6. Water daily

Watering correctly (and frequently!) is non-negotiable if you want a successful seeding project. The soil surface should be kept moist by watering daily (or more frequently, if needed) until the seedlings reach a mowing height, usually 2.5-3 inches tall.

New Lawn Maintenance

Start mowing your new lawn once it reaches the right mowing height. Make sure your mower blade is sharp, then stick with the highest setting for your grass type and only remove the top 1/3 of the grass blades. Once your new lawn has filled in and become established, begin to cut back on watering to twice a week, applying about ½ inch of water each time. To keep your new lawn thick and green, begin fertilizing it regularly 2 months after planting. Keep an eye out for weeds, too. If they pop up, fight back with Roundup® For Lawns Products, making sure to follow label directions.