Concern Weed Prevention

Corn gluten meal acts as a pre-emergent herbicide by inhibiting the root development of germinating weed seeds. Because it prevents the seeds from establishing a root system, the weeds die shortly after sprouting.

No, you should avoid using this product on newly seeded areas. Since it prevents seeds from rooting, it will inhibit your new grass seed from germinating as well.

No, this is a pre-emergent herbicide, meaning it only stops new weeds from germinating. It will not kill or control weeds that have already sprouted and established themselves.

You will typically notice a fast green-up of your existing grass due to the 8-2-4 fertilizer blend shortly after application. The weed prevention benefits will become apparent as you see fewer new weeds emerging over the following weeks.

Concern Weed Prevention Plus is made with natural ingredients like corn gluten meal, bone meal, and potassium sulfate. While it is generally considered safer than synthetic chemical herbicides, it is best practice to keep pets and children off the lawn until the granules have been watered in and the area has dried.

For best results, apply the product in early spring before weed seeds begin to germinate. Depending on your local climate and weed pressure, a second application later in the season may be beneficial to maintain coverage.