Hi-Yield Weed and Grass Stopper with Dimension Herbicide can be used in perennial beds to prevent weeds from germinating provided the ornamentals are listed as tolerant on the product label.
The general rule for spring is to apply your pre-emergent herbicide treatment after the ground has thawed from the winter but before the temperature of your soil reaches 55 degrees, as that is when crabgrass begins to germinate. Other weeds will germinate when the soil temperature is between 55 and 65 degrees. You can use a soil thermometer to determine the temperature of your lawn/area. You will want to measure the temperature of the soil a few inches below ground.
The ideal time to apply a fall pre-emergent herbicide to your yard is between August and November when the soil temperature is below 70 degrees and dropping.Yes, If you have used a pre-emergent with pendimethalin in the fall you can use a pre-emergent with dithiopyr like Hi-Yield Weed and Grass Stopper with Dimension Herbicide in the spring to prevent resistance buildup.
Hi-Yield Weed and Grass Stopper with Dimension Herbicide can be used in the fall and/or in the spring, it all depends on what you are targeting, different weeds germinate at different times of the year so when you use it is based on that and your target weeds. Under the Application Timing Section of the product label, there is information for both Spring and Fall applications.
Spring Applications will target spring/summer weeds such as crabgrass, nutsedge, etc and should be applied when soil temps are just under 55 degrees.
Fall applications will target winter weeds such as clover, chickweed, poa annua(annual bluegrass) and should be applied once soil temps fall below 70 degrees and continue to drop.
Please view our Lawn Care Guides to view helpful information on common weeds and our Warm Season and Cool Season Lawn Care Schedule for general timing recommendations based on turfgrass type.
For the most accurate timing in your area, contact the Master Gardener with your County Extension Office as they can provide the best recommendation on when to apply spring and fall pre emergents.
For split applications applying Hi-Yield Weed and Grass Stopper with Dimension Herbicide, divide the listed rate of 9.2lbs per 1000 sq ft in 2 which would be 4.6lbs per 1000 sq ft. Make the 2nd application 5 to 10 weeks after the intitial application. Do not exceed more than 27.6lbs per 1000 sq ft per year.
Per the product label: Split or sequential applications may be used to provide improved weed control or to provide extended weed control in areas with long growing seasons.Sequential applications may be made used to provide improved weed control or to provide extended weed control in areas with long growing seasons. Applications in the late summer following a spring application or in the spring after a fall application, provided the maximum application rates per year given below are not exceeded
Hi-Yield Weed and Grass Stopper with Dimension Herbicide is labeled to be used over mondo grass but does not list purple wintercreeper as tolerant.
Pendulum 2G Granules would be a better option for pre emergent control of listed weeds in mondograss and wintercreeper as they are both listed tolerant ornamentals per the product label.
Hi Yield Weed & Grass Stopper with Dimension is labeled for pre emergent control of many common weeds including poa annua (annual bluegrass). For best results, it is recommended to apply pre emergents in late fall and early spring. Fall applications should be applied when soil temperatures are below 70 degrees but before the first frost of the season. Spring applications should be applied as the weather warms but before soil temperatures reach 55 degrees.
View our Warm Season Lawn Care Calendar or contact your County Cooperative Extension Office for specific timing recomendations in your area.
Please view our Poa Annua Treatment & Prevention Guide for more information.
The application rate for Hi-Yield Weed and Grass Stopper with Dimension Herbicide is 9.2lbs per 1000 sq ft for use in landscape and ornamentals. Please view more infromation under the Use for Landscape Ornamentals Section of the product label for more specific information.
Hi-Yield Weed and Grass Stopper with Dimension Herbicide cannot be applied in areas where you have or are going to plant anything edible. It can stay in the soil for up to 4-6 months. As an alternative, you could use a pre-emergent like Prowl H20 Herbicide. Please be sure to review the product label for more information and complete application instructions.
Certainty will kill actively growing poa and is safe on Bermuda as directed. Hi-Yield Weed and Grass Stopper with Dimension Herbicide can be applied to established turf as directed in the fall for a pre-emergent application.
Hi-Yield Weed and Grass Stopper with Dimension Herbicide. We recommend contacting your local cooperative extension to see when is the best time to apply Hi-Yield Weed and Grass Stopper with Dimension Herbicide in your area.
Hi-Yield Weed & Grass Stopper with Dimension will not kill existing poa annua. It is a fantastic product and one of many we carry that would do a great job of preventing poa annua germination when applied at the right time. It can be hard to get rid of poa annua in lawns with a post-emergent, depending on what kind of turfgrass you may have. If you want to let us know what turf you have we can see if we have a post-emergent product that would work for you.
"Sticky weed" or "stickers" is a term used to describe about 7 different plant/weed species that have some sort of sticky sharp seed or part to the plant. In order for us to know which one you have (the treatment options for each are different, and not all are able to be prevented) we would need to know specifically which one you have. You can either take one to two up close and well focused photos of the weeds to email back to us to try and ID, or you can use this link to contact your local cooperative extension office and master gardener in your county with assistance on the specific weed in your yard.
Hi-Yield Weed and Grass Stopper with Dimension Herbicide label does not list your spreader setting. If you need to use 3lbs of product per 1,00 sq. ft. you would add 3 lb. of product to spreader, start with a medium setting, then apply product to a 20 x 50 ft. area (1,000 sq. ft.). If you have product left, your setting is too low. If you run out of product, your setting is too high. Typically if you walk at a normal pace and set the spreader at the middle setting, that is usually the right amount per 1000 square feet. We recommend to apply just before soil temps reach 55 degrees.
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.
Hi-Yield Weed and Grass Stopper with Dimension Herbicide does not contain a fertilizer. We do offer fertilizers that can be purchased separately.
Dimension 2EW would be a liquid option. Hi-Yield Weed and Grass Stopper with Dimension Herbicide is just a granule generic version.
Hi-Yield Weed and Grass Stopper with Dimension Herbicide does not list daisies as a known tolerant species, so we would either test a small area first or avoid apply this herbicide around desirable daisy plants.
Hi-Yield Weed and Grass Stopper can be used on established Bermuda grass. If you installed Bermuda grass in early November, the grass needs to be fully rooted and have been mowed at least twice before you use any herbicides on it. Keep in mind that this product is a pre-emergent. It can provide some early post-emergent control of crabgrass only on established turf areas. Feel free to contact us at 866-581-7378 M-F 9a-5p if you need assistance finding a product for your needs.
Hi-Yield Weed and Grass Stopper with Dimension Herbicide is labeled for prevention of oxalis/woodsorrel. The rate for a cool-season lawn is 2.4 - 9.2 lbs. per 1,000 sq. ft. Please keep in mind that this is a pre-emergent only, so it does not control existing weeds.
