Mel writes
There is no minimum temperature indicated to apply Hi-Yield Crabgrass Weed Control. Basically, you need to apply the product 1-2 weeks prior to the onset of conditions favorable for the weed seed germination. This will vary from region to region and you should contact your local cooperative extension office to enquire when the appropriate application time would be in your area.
Answer last updated on: 03/16/2011