A day finally comes when the wind blows gently from the south, and all the shades of green return, spring has finally arrived.  Soon the soil will be warm enough for the crabgrass seeds, which have wintered over, to germinate.  Crabgrass is slow to establish but by August it will push its way into every bare spot on your lawn and become a real eyesore.  

There is hope, and Jonathan Green has TWO crabgrass solutions for your consideration, but both must be spread before the crabgrass seeds germinate, so it's best to act now.