Per the Hi Yield Weed and Grass Stopper with Dimension Herbicide Product Label: This product should be applied only to lawns and turfgrasses that are well established. For newly established lawns, initial application of this product should be made only after turfgrasses have developed a vigorous root system, uniform stand, and received at least two mowings following seeding, sodding, or sprigging. Exception: In newly established lawns of Kentucky Bluegrass, Perennial Ryegrass and/or Tall Fescue, this product may be applied two weeks after the first sign of germination.
Reseeding, Overseeding, or Sprigging Reseeding, overseeding, or sprigging of areas treated with this product within 10 weeks after a single application of this product or within 16 weeks after a split application program totaling 9.2 lb./1,000 sq. ft. (0.5 lb. active ingredient (ai) per acre) or more may inhibit the establishment of desirable turfgrasses. When reseeding or overseeding, follow proper cultural practices for seedbed preparation, seedling, irrigation and fertilization.
Hi-Yield Weed and Grass Stopper with Dimension Herbicide can be applied to St. Augustine lawns. It is not specifically labeled for Floratam species. With this being a sensitive turfgrass, we suggest discussing product applications with the Master Gardener at your local cooperative extension office.
Yes Hi-Yield Weed and Grass Stopper with Dimension Herbicide is labeled for Poa Annua aka annual bluegrass. Late summer application is most likely the end of august. Please contact the Master Gardener at your Local Cooperative Extension Office just to verify the application schedule.
After applying Hi-Yield Weed and Grass Stopper with Dimension Herbicide you want to wait about 4 months to replant.
Typically the best time to aerate is before applying a pre-emergent like Hi-Yield Weed and Grass Stopper with Dimension Herbicide. The ideal time to aerate for Warm Season Lawns is June through August (usually 1 - 2 times). For Cool Season Lawns you would aerate a little more frequently, typically 1-2 times from March thru April and then from September thru November
Yes Hi-Yield Turf & Ornamental Weed and Grass Stopper will stop sandburs from coming up. It will not kill what it already there.
Yes, Hi-Yield Weed and Grass Stopper with Dimension Herbicide provides pre-emergent control of Crabgrass and will controlof other listed weeds when applied prior to their germination. In newly established lawns of Kentucky Bluegrass, Perennial Ryegrass and/or Tall Fescue, this product may be applied two weeks after the first sign of germination. You can view our Cool Season Lawn Care Guide here or contact your local extension office for the best time to apply the product in your region.
You can reapply Hi-Yield Weed and Grass Stopper with Dimension for extended control as long as you are not exceeding the maximum rates of 9.2 lbs per 1,000 sq ft per application and 27.6 lbs per 1,000 square feet per year. If you have existing weeds that you need to kill, then we would need to know the specific weeds you are targeting to make a recommendation for post-emergent activity. You can see more tips in our Lawn Care Guides here.
When using Hi-Yield Weed and Grass Stopper with Dimension Herbicide in Northern areas like IL, you have different application rate options, depending on how long you need the residual to last, and whether you plan to reapply in the Fall. You can apply:
For 2-3 months control: 2.4 lbs per 1000 sq ft (0.81 lbs per 338 sq ft)
For 3-4 months control: 3.2 lbs per 1000 sq ft (1.08 lbs per 338 sq ft)
For Early post-emergent control of crabgrass: 4.0 - 9.2 lbs per 1000 sq ft (1.35 - 3.11 lbs per 338 sq ft)
Keep in mind that the maximum annual rate is 9.2 lbs per 1000 sq ft, which would be 3.11 lbs for 338 square feet.
We apologize for any confusion. The Hi-Yield Weed and Grass Stopper with Dimension must be activated with irrigation or rainfall to be effective. If there are children or pets in the area, then it is best to water in the product immediately after application. Per the product label: Performance is improved if application is followed by 1/2 inch of rainfall or sprinkler irrigation. Erratic weed control may result if not activated by rainfall or irrigation within 30 days after application.
Keep in mind that Hi-Yield Weed and Grass Stopper with Dimension Herbicide cannot be applied in areas where you are going to plant anything edible. It can stay in the soil for up to 4-6 months. If you are looking to prevent weed growth in an area where edibles are planted, you would want to use Monterey Vegetable and Ornamental Weeder after you have planted.
Ferti-Lome Winterizer and Weed Preventer II For Southern Grasses already contains dithiopyr which is the active ingredient in Hi-Yield Weed and Grass Stopper with Dimension Herbicide. There is no reason or benefit to using both so you would just use the Winterizer for the added benefit of the nutrients.
The best time to apply pre-emergent herbicides such as Hi Yield Weed and Grass Stopper with Dimension Herbicide is when the soil temperature is consistently above 55 degrees Fahrenheit, so not during winter months. It would be a good idea to contact your local cooperative extension office to find out the best timing for your specific area.
Yes, Hi-Yield Weed and Grass Stopper with Dimension Herbicide is a good choice for preventing crabgrass in tall fescue. You will need to wait at least 12 weeks after application before reseeding.
Hi-Yield Weed and Grass Stopper with Dimension Herbicide is generally applied in spring and fall depending on your region and what weeds you are targeting. Per the product label: Do not apply more than 9.2 lb of this product per 1,000 sq. ft. per application and no more than 27.6 lb of this product/1000 sq. ft. per year (equivalent to 0.5 and 1.5 lb of active ingredient (ai) per acre, respectively). It would be a good idea to contact your local cooperative extension office for advice on the best times to apply in your area.
Hi-Yield Turf & Ornamental Weed and Grass Stopper contains dimension pre-emergent which provides superior control of crabgrass as well as control or suppression of other listed weeds when applied before they germinate. This will also provide post-emergent control of crabgrass only and is effective on crabgrass up to 4 to weeks after it has germinated and emerged. A weed and feed product is fertilizer with either a pre-emergent or a post emergent mixed in with it.
Hi-Yield Weed and Grass Stopper with Dimension Herbicide does not harm anything actively growing. It is used only to prevent the listed weeds from growing in the applied area.
