This week we had spring like temperature and full sun. I suppose it was all that was needed to germinate the seeds. Crabgrass grows from a seed in spring when the weather is sunny and the temperature is in the mid 50's to 70's.
I am a firm believer that crabgrass needs to be addressed as soon as you notice it growing otherwise it will take over your yard. There is only one way to remove crabgrass and that is to kill it.
There is a cold front coming in and they are calling for snow flurries. The cold will kill the crabgrass. The forecast is calling for five days of cold weather followed by spring like temperatures.
When the temperature reaches an average of 50 degrees I will apply the crabgrass pre-emergent herbicide. The herbicide will penetrate the soil and kill the crabgrass and other grassy weed roots. It takes approximately seven days to kill the crabgrass and grassy weeds. Then the dead crabgrass will be removed from the lawn with the thatching rake and my lawn will be crabgrass and weed free.
Learn more about crabgrass and how to remove it from flower gardens by viewing youtube video: