Answer to question about using herbicides against crabgrass growing on the lawn. Crabgrass generally appears in lawns in late May, so earlier in the spring is the time for applying pre-emergent herbicides.

Photo of crabgrass seed head.

Killing Crabgrass With Pre-Emergent Herbicides

What's the best way of killing crabgrass (also spelled "crab grass")? Using preemergent herbicides is the best way to get rid of crabgrass, but killing the weed begins with proper identification, to which end I provide pictures to help with your weed

How to Get Rid of Crabgrass

Chemical and organic weed control tips. Chemicals (herbicides) for crabgrass, dandelions, poison ivy; organic weed control of Japanese knotweed.

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Lawn Care: A Social Obligation?