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- Keep crabgrass seeds from spreading.
- Kill existing crabgrass.
- Remove dead crabgrass plants.
- Replant bare lawn spots with new grass seed.
- Apply a crabgrass preventer at the appropriatetimes.
- Set your lawnmower at the high end of the range that is bestfor your grass type.
Considering this, what will kill crabgrass but not grass?
Because crabgrass is a grass, mostcombination herbicide and lawn fertilizer products, known asweed & feed fertilizers, generally won't kill it. Theseproducts typically include selective herbicides that killbroadleaf weeds, such as dandelions and other commonlawn weeds, and keep grassesunharmed.
- Pull the crabgrass up—roots and all.
- Seed the lawn to fill bare areas.
- Deeply water your lawn one or two times per week.
- When mowing, keep the grass at about three inches tall.
- Next spring, apply a pre-emergent around the time your flowersand trees bloom.
Besides, should you pull out crabgrass?
You can also pull crabgrass by hand usinga hand trowel or digging knife, but it should be done earlyin the season before the plants can produce seeds. Ifcrabgrass has taken over your lawn, it's time to treat witha product like, Roundup® For Lawns3 Ready-To-Spray,which is ideal for applying to your entire lawn.
Herbicides that kill crabgrass will alsokill desirable grasses such as bluegrass, ryegrass andfescue. If you treat your lawn with a pre-emergent, you cannotseed. And if you seed, you cannot use a pre-emergentherbicide.