Dan wrote:
Stubby wrote:
Use crabgrass killer 3 times in July.


Why not use a pre-emergent once in late June??


A pre=emergent control must be applied BEFORE the crabgrass seeds
sprout. This means March or early-April.

Later in the year you can kill the plants with crabgrass killer. This
takes about 3 applications 10-days apart. The idea is to kill the
plants before they spread seeds which will sprout in the following Spring.

So, there are two very different approachs. I use both and stay barely
ahead of the crabgrass infestations.