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Product Overview
Same active ingredient as Surflan Herbicide! Weed Impede (formerly Weed Stopper) from Monterey is a pre-emergent treatment for control of annual grasses and certain broadleaf weeds in established warm season turf including bahiagrass, bermudagrass, buffalograss, centipedegrass, St. Augustinegrass, zoysiagrass and established tall fescue growing in warm season areas, ornamentals, trees, roses, bulbs, iceplant and garden grown fruit trees. Weed Impede lasts up to 6 months to control grasses and weeds. Can be tank mixed with Round Up in unplanted areas.
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Details
Active Ingredient Oryzalin 40.4% Target pests Controlled: Carpet weed, Purslane, Chickweed, Groundsel, Henbit, Prostrate Spurge, Pigweed, Barnyardgrass, Lovegrass, Annual Bluegrass, Wild Oat, Large Crabgrass, Smooth Crabgrass, Foxtails, Italian Ryegrass, Goosegrass, Witchgrass
Suppressed: Horseweed, Black Nightshade, Ragweed, Prickly Lettuce, Smartweed, Sowthistle, Climbing Milkweed, Spotted Spurge, Morningglory, Teaweed, Black Mustard, Velvetleaf, Wild Mustard, Volunteer WheatFor use in Certain established landscape ornamental plants, including trees, shrubs, ground covers/perennials, and flowers, non-bearing fruit and nut trees, non-bearing vineyards, and ornamental bulbs grown in flowerbeds, ornamental plantings and rock gardens Application 1.5 - 3 oz. per 1,000 sq. ft. Pet safe Yes, if used as directed on label Yield Treats 5,000 to 10,000 sq. ft. Formulation Professional Product Shipping Weight 1.43 lbs Manufacturer Monterey Lawn & Garden (Mfg. Number: LG 5130) UPC 022179100053 EPA Registration 54705-5 Weed Impede is a pre-emergent treatment for control of annual grasses and certain broadleaf weeds in established warm season turf including bahiagrass, bermudagrass, buffalograss, centipedegrass, St. Augustinegrass, zoysiagrass and established tall fescue growing in warm season areas, ornamentals, trees, roses, bulbs, iceplant and garden grown fruit trees. Weed Impede lasts up to 6 months to control grasses and weeds. Can be tank mixed with Round Up in unplanted areas.
WARNING: This product can expose you to chemicals including oryzalin, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to https://www.P65Warnings.ca.gov -
Product Documents
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13 Customer Reviews
Top Reviews
Weed Impede
By Mark on 03/13/2014
Excellent product as long as you use it every 6 months as directed (in AZ that is in March and October). Be sure to water the applied area if it des not rain. I have 1.25 acres with almost no weeds wh…
Read Full Review »Fast, efficient, and best price.
By Robert on 04/22/2013
Order came promptly, price was best, and I didn't even have to leave the house. Bob
Monterey Weed Impede
By Steve on 02/05/2015
Verified Purchase
Not sure about other states but my Arizona weeds laughed at it.
Expert response:
Weed Impede is designed to be a pre-emergent herbicide only, so if you are needing to treat existing weeds, then you will need to use an additional product. We are happy to assist you with choosing products appropriate for your situation, depending on what plants you are trying to control and in what areas. You may reach us by telephone at 866-581-7378 M-F 9a-5p EST. -
29 Questions & Answers
Helpful Q&A'sQCan Weed Impede be applied with a watering can and if so how do I mix it?AThe Weed Impede product label does recommend that you use either a handheld sprayer or a backpack sprayer to get even coverage and this would be our recommendation as well. The amount of Weed Impede y…
Read Full Answer »The Weed Impede product label does recommend that you use either a handheld sprayer or a backpack sprayer to get even coverage and this would be our recommendation as well. The amount of Weed Impede you will use will vary depending on what weeds you are trying to prevent and what season you are treating in but in general you will need 1-12 fl oz per 1,000 sq ft of area to be treated. According to the Weed Impede product label: "The amount of water used to apply WEED IMPEDE™ herbicide is not critical, but should be sufficient for uniform coverage of the target area. Calibrate by determining the volume of water required to treat 1,000 square feet. Use this calibration volume to determine the amount of water and WEED IMPEDE™ herbicide needed to treat the target area (see the following calibration example). Note: Sprayer calibration (volume of spray needed to treat 1,000 square feet) will vary with each individual operator.Steps in Calibration:1. Mark an area of 1,000 square feet (i.e. 20 by 50 feet or 25 by 40 feet).2. Place the sprayer on a level surface and add water noting the final level of water in the spray tank.3. Spray the marked area with a sufficient volume of water to provide uniform coverage. Refill the sprayer to the same level as before measuring the amount of water added. The measured water added to the sprayer is the volume needed to cover 1,000 square feet.4. Determine the application rate (fl. oz./1,000 sq. ft.) for WEED IMPEDE™ from the Recommendations section of this label.5. To each volume of water used as measured in step 3, add the amount of WEED IMPEDE™ as determined in step 4.Example: If the sprayer uses 2 gallons of water to cover 1,000 square feet and the desired application rate of WEED IMPEDE™ is 3 fluid oz./1,000 square feet, then you would add 3 fluid ounces of WEED IMPEDE™ to every 2 gallons of water to be used."QIs Monterey orange? Hoping that it will show where I had sprayed in a desert landscape.AMonterey Weed Impede (Surflan Herbicide) is indeed a bright orange liquid product.
QHow soon can I let my dogs in the back yard after spraying Monterey Weed Impede?APets can return to the area once dry, typically a few hours is best after applying Monterey Weed Impede to ensure the area is thoroughly dry.
