Crabgrass Pre-Emergent Timing/Question
As spring starts and the Forsythias begin to bloom, habit tells me it's time to put down a pre-emergent to control crabgrass.
It seems everyone says that Forsythia blooming is an indication of crabgrass germination. It's that time in Maryland.
I'd like to discuss that. It seems to be that crabgrass doesn't do much until it's hot outside. I don't recall seeing the first evidence of crabgrass until June (at the earliest). So, why put down the pre-emergent in March? If someone were to put down one application of Halts, wouldn't it be better to wait until late May so the application would last all summer?
Does anyone have any pictures of crabgrass in April or May?