You will need 35-45 lbs of Hi Yield Crabgrass Weed Control to cover 20,000 square feet.
Since Hi-Yield Crabgrass Weed Control is a pre-emergent, it is meant to prevent crabgrass from germinating so it has to be applied before it starts to germinate. 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.
Hi-Yield Crabgrass Weed Control is a pre-emergent herbicide that needs to be watered in about so that rainfall should not have effected the application and would actually help.
Hi-Yield Crabgrass Weed Control is safe to apply to Centipede grass as directed on the product label. 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. The product label also contains spreader settings to refer to. If your spreader is not listed, Scott's has a tool on their website that might help.
Pre-emergents, such as Hi-Yield Crabgrass Weed Control, should be applied when the soil temperature reaches 55 degrees Fahrenheit in the spring and before it falls below 55 degrees Fahrenheit in the fall months. You will use 2.25 - 3.5 lbs. per 1,000 sq. ft. in late winter or early spring.
Please check out our Warm Season Lawn Schedule for information on when products should be applied throughout the year.
According to this guide from the UGA Extension Service, the best timing for Fall pre-emergent herbicides like Hi-Yield Crabgrass Weed Control will be August 15- September 15 in North Georgia and September 1 to 15 in South Georgia. If you have not applied your Fall pre-emergent, then you should do so as soon as possible now.
Hi-Yield Crabgrass Weed Control Granular is a pre-emergent, selective herbicide that contains Benefin 1.33% and Trifluralin 0.67%. The remaining ingredients are proprietary to the manfacturer and not disclosed to anyone.
Hi-Yield Crabgrass Weed Control this product is a pre-emergent, so you would need to wait at least 3 to 4 months before re-seeding or re-sodding your lawn after application. Roundup does not have any residual in soil, so this may be a better option. You can install your sod 2 weeks after application.
It is advised to wait to apply Hi-Yield Crabgrass Weed Control to newly sprigged areas of Bermudagrass, St. Augustine, Centipedegrass or Zoysiagrass until turf is well established. Established turf is usually 8 weeks or atleast 2 mowings. The product label also advises that this product NOT be applied in the spring to turfgrass planted the previous fall.
Hi-Yield Crabgrass Weed Control would be a good option for you. It is safe if used according to the label instructions. Children should be kept out of the area while the product is being applied and watered in, but can safely return when everything is fully dry.
Yes, it is ok to dethatch the lawn prior to applying Hi-Yield Crabgrass Weed Control.