Spectracide® Weed Stop® For Lawns Concentrate2 (Ready-to-Spray)

Spectracide® Weed Stop® For Lawns Concentrate2 controls more than 460 types of weeds as listed – and it won't harm your lawn when used as directed. Use it to treat your lawn, including bluegrass, fescue, Bermuda, perennial ryegrass and zoysia (do not apply to zoysia just emerging from dormancy). ). This formula kills by contact down to the root, with visible results in as little as 3 hours. It controls all types of listed broadleaf weeds, including dandelion, chickweed, clover and yellow nutsedge (see the product label for a complete list). Available as a dilutable concentrate and as a 32 ounce ready-to-spray concentrate with a QuickFlip™ sprayer that attaches to your garden hose.

Apply Spectracide Weed Stop For Lawns Concentrate2 when temperatures are between 45 and 90 degrees. Spray until wet to control weeds. Do not apply when daytime temperatures are above 90 degrees because lawn injury can occur. Read the entire label before using.

  • KILLS WEEDS, NOT THE LAWN™: Won't harm lawns when used as directed – kills weeds, including yellow nutsedge, down to the root.
  • VISIBLE RESULTS AS FAST AS 3 HOURS: Kills by contact.
  • KILLS 460+ TYPES OF WEEDS: Controls all types of listed broadleaf weeds, including dandelion, chickweed, clover and yellow nutsedge (see the product label for complete weed list).
  • COVERAGE: 32 ounce bottle treats up to 21,333 square feet of St. Augustinegrass, 16,000 square feet of other warm season grasses, or 8,000 square feet of cool season grasses.
  • GUARANTEED: Guaranteed to work or your money back – see product label for details.

Active Ingredients

2,4-D, dimethylamine salt 7.57%
Mecoprop-p, dimethylamine salt 2.73%
Dicamba, dimethylamine salt 0.71%
Sulfentrazone 0.18%
Other Ingredients 88.81%
Total 100.00%
THIS PRODUCT CONTAINS: 0.54 lb 2,4-D acid equivalent per gallon or 6.31%; 0.19 lb Mecoprop-p acid equivalent per gallon or 2.25%; 0.05 lb Dicamba acid equivalent per gallon or 0.59%; 0.02 lb Sulfentrazone per gallon or 0.18%. Isomer Specific by AOAC Method.
  • 32 fl oz
Controls most common weeds including:
Alder, Alfalfa (Lucerne), Alpine aster, Alsike clover, Alyce clover, American black elderberry, American elm (White elm), American hazel, American persimmon (Common persimmon), American speedwell (American brooklime), American yellowrocket, Amur honeysuckle, Annual knawel (German knotweed), Annual nettle (Dwarf nettle), Annual rape (Wild rape), Annual sowthistle (Common sowthistle, Milk sowthistle), Annual trampweed, Annual wild geranium(Spotted geranium, Wood geranium, Cranesbill), Annual yellow sweet clover, Arkansas rose, Artichoke thistle, Asiatic pennywort, Asiatic witchweed, Atlantic white cedar (Southern white cedar), Austrian fieldcress, Ball mustard, Bedstraw, Beggarweed (Creeping beggarweed), Big leaf maple, Bigroot morning glory, Bigtooth aspen (American aspen, White poplar), Bi-lobed speedwell (Twolobe speedwell), Bindweed (Wild morning glory), Bird vetch, Bitter sneezeweed, Bitterweed, Black bent (Redtop), Black birch (River birch, Water birch), Black cherry, Black cottonwood, Black medick, Black mustard, Black willow, Blackberry, Blackberry elder, Black-eyed Susan, Blackseed plantain, Blessed thistle, Bloodflower (Tropical milkweed, Mexican butterfly weed), Blue ash, Blue elderberry, Blue lettuce, Blue mustard, Blue toadflax, Blue vervain, Blue woodsorrel, Blunt-leaved milkweed (Clasping milkweed), Box elder, Bracted plantain, Brambles, Brass buttons, Brazil pusley, Brazilian pepper, Bristly mallow, Bristly oxtongue, Broadleaf knotweed, Broad-leaved dock, Broomweed, Buckwheat, Bulbous buttercup, Bull mallow (French mallow), Bull nettle, Bull thistle, Bur oak, Burclover, Burning nettle (Stinging nettle), Bushy aster, Bushy buttonweed, Buttonweed (Rough buttonweed, Poorjoe), California knotweed, California rose, California wild grape, Canada thistle, Carolina geranium (wild), Carpetweed, Catchweed, Catchweed bedstraw, Catnip, Catsear (Catsear, dandelion, False, dandelion, Spotted, and Common catsear), Chamber bitter, Chamise, Chickweed (Common chickweed), Chicory, Chinese yarrow (Siberian yarrow), Chinkapin oak, Choke cherry, Coffeebean, Coffeeweed (Colorado river-hemp), Common burdock, Common cinquefoil (Oldfield cinquefoil), Common cocklebur (Rough cocklebur, Large cocklebur), Common dandelion, Common groundsel, Common hawkweed (Yellow hawkweed), Common hawthorn, Common honeysuckle (Woodbine), Common iceplant, Common knapweed, Common knotgrass (Knotweed), Common lespedeza, Common lupine, Common mallow (Alkali mallow, Buttonweed, Cheeseweed, Dwarf mallow), Common mullein, Common primrose (English primrose), Common purslane, Common ragweed, Common salsify (Goatsbeard), Common snowberry, Common speedwell, Common sunflower, Common tarweed, Common thistle (Bull thistle), Common yellow, woodsorrel (Yellow woodsorrel, Common yellow oxalis), Coral bead, Corn chamomile, Corn speedwell, Corn spurry, Coyote brush, Creeping buttercup, Creeping woodsorrel, Crimson clover, Cudweed (Purple cudweed), Cupid shaving brush, Curly dock (Curled dock, Yellow dock, Sour dock), Curly indigo (Sensitive jointvetch), Curlycup gumweed, Cutleaf evening primrose, Daisy fleabane (annual), Dead nettle, Desert wild grape, Dewberry, (Garden dewberry), Dichondra, (Carolina ponysfoot), Distaff thistle, Dogbane, Dogfennel, Dollarweed (Manyflower marshpennywort), Drummonds thistle, Elk thistle, English daisy, Eucalyptus (Blue-gum, Tasmanian blue-gum, Southern blue-gum), Evergreen blackberry, Fall dandelion, False flax, False sunflower, Fennel, Field bindweed (*Morning glory, Creeping Jenny), Field burweed (Lawn burrweed, Common soliva, Spurweed), Field horsetail (Common horsetail, Mare's tail), Field mouse-ear (Field chickweed), Field oxeye-daisy, (Creeping oxeye, Oxeye daisy), Field pansy, Field pennycress, (French weed), Field pepperweed (Field pepperwort), Field violet, Flatwoods, plum (Sloe plum), Flix weed, Flodman thistle (prairie), Florida betony, Florida prickly, Blackberry, Florida pusley, Florida yellow, woodsorrel, French broom, Garden spurge, Garlic mustard, Giant ironweed, Giant ragweed, Gooseberry, Gray chickweed (Gray mouse-ear chickweed), Gray thistle, Great burdock, Great ironweed, Great yellow woodsorrel, Ground ivy, (Creeping Charlie,Creeping Jenny), Groundsel,, Hackberry, Hairy beggarticks, Hairy bittercress, Hairy buttercup, Hairy fleabane, Hairy galinsoga, Hairy vetch (Fodder vetch, Winter vetch), Hairy-pitted stork's bill, Healall, Heartleaf drymary, Heartleaf nettle, Heath aster (White heath aster), Hedge mustard, Hemp, Hemp sesbania, Henbit, Himalayan blackberry, Hoary cress, Hoary plantain, Hoary vervain, Hop clover, Horsenettle, Horseradish, Horseweed/marestail, Illinois woodsorrel, Indian mock strawberry, Indian mustard, Innocence (Blue-eyed Mary), Italian thistle, Ivyleaf morning glory, Ivyleaf speedwell, Japanese honeysuckle, Jewel milkweed, (Pallid milkweed), Jewelweed, Jimsonweed, devil's snare, Johnny-jumpup violet, Kudzu, Ladysthumb smartweed, Lamb's quarters, (Goosefoot, Pigweed), Lambsquarters, Lanceleaf ragweed, Lantana, Large flower pusley, Late goldenrod (Canada goldenrod), Leafy spurge, Leafy thistle, Lilac, Little bittercress, Little evening primrose (Small sundrops), Little mallow (Least mallow), Locust, London rocket, Mackenzie willow, Madrone, Marcela, Marshelder, Matchweed, Mayweed, (Stinking chamomile), Meadow hawkweed, Meadow thistle, Mesquite (Honey mesquite), Mexican morning glory, Mexicanweed (Mexican, fireweed, Kochia), Mimosa, Mock strawberry, Mojave stinkweed, Moneywort, Mountain bush honeysuckle, Mountain woodsorrel, (Wood shamrock), Mouse-ear chickweed, Mouse-ear hawkweed, Mugwort, Multiflora rose, Musk thistle, Narrow leaved willow, Narrowleaf cudweed, Narrowleaf plantain, (English plantain, Buckhorn), Nightshade (silverleaf), Northern bedstraw, Northern bush honeysuckle, Northern pin oak, Oakleaf fleabane, Old world diamond flower, (Oldenlandia, Flattop, mille graines), Orange hawkweed, Oriental cocklebur, Pale smartweed, Parsley-piert, (Slender parsley-piert), Parsnip (Wild parsnip), Pearlwort (Bird's-eye pearlwort), Pennsylvania cinquefoil, (Prairie cinquefoil), Pennsylvania smartweed, Pepperweed (Perennial pepperweed), Pigweed, Pin oak (Swamp Spanish oak), Pineappleweed, Pineywoods bedstraw (Wood bedstraw), Plains coreopsis (Tickseed), Plantain (Broadleaf plantain, Greater plantain, Common plantain), Platte thistle, Plumeless thistle, Poison hemlock, Poison ivy, Poison oak, Poison sumac, Pokeweed, Port Orford cedar (Lawson cypress), Povertyweed, Prairie sunflower, Prickly lettuce (Compass plant), Prickly sida, Prostrate knotweed, Prostrate pigweed, Prostrate spurge, Prostrate verbain, Prostrate vervain, Puncture vine (Goat's-head), Purple amaranth, Purple aster, Purple cudweed (Annual purple cudweed, Perennial purple cudweed), Purple deadnettle, Purple milkweed, Purple milkvetch (Purple loco, Field milkvetch), Purslane speedwell, Quaking aspen, Rabbit foot clover, Raspberry (Wild black raspberry), Red alder, Red clover, Red maple (Water maple, Soft maple), Red morning glory, Red sorrel (Sheep's sorrel), Redroot, Redroot pigweed, Red-seeded dandelion, Redstem filaree, Redweed, Redwood sorrel (Oregon oxalis), Rough cinquefoil, Rough fleabane, Rough horsetail (Scouringrush horsetail), Russian pigweed, Russian thistle, Sage, Sagebrush, Salmonberry, Saltcedar, Sassafras, (White sassafras, Red sassafras, Silky sassafras), Scarlet pimpernel, Scotch broom, Scotch thistle (Cotton thistle), Scouler's willow, Shepherd’s purse, Shiny cudweed, Shortstalk stinkweed, Showy evening primrose, Showy goldenrod, Showy tick-trefoil, (Canadian tick-trefoil,, Canada tick-clover), Silver ponysfoot (Silver nickel vine), Skunkbush sumac, Slender amaranth, Slender bush clover (Slender lespedeza), Slender plantain, Slender speedwell, Slender stinkweed, Slender-flower thistle, Smallflower buttercup, Smallflower galinsoga, Small-flowered, winter-cress, Smooth bedstraw (Crosswort), Smooth beggarticks, Smooth cat's ear, Smooth chaff-flower, Smooth dock, Smooth pigweed, Sneezeweed, Snow speedwell, Sorrel, Southern bush honeysuckle, Southern wild rose, (Virginia rose, Common wild rose), Spanish needles, Spiny amaranth, Spiny cocklebur, Spiny sowthistle, Spotted knapweed, Spotted locoweed, (Freckled milkvetch), Spotted spurge, Sprawling horseweed, St. Johnswort, Sticky chickweed, (Stick mouse-ear chickweed), Stiff goldenrod, (Stiff-leaved goldenrod), Strawberry clover, Swamp smartweed, Sweet goldenrod, Sweet gum (American sweetgum), Swinecress, Tall beggarticks, Tall milkweed (Poke milkweed), Tall morning glory (Common morning glory)Tall nettle, Tall thistle, Tall vervain, Tanoak (Tanbark-oak), Tansy mustard, Tansy ragwort, Tanweed (Water knotweed, Water smartweed), Teaweed, Texas filaree, Thimbleberry, Three flower beggarweed, Thymeleaf speedwell, Toadflax (Common toadflax,Yellow toadflax), Tooth-leaved croton (Tropic croton, Sand croton), Trailing blackberry, Trailing crownvetch, Tree tobacco, Trumpet creeper (Trumpet vine, Cow itch vine, Hummingbird vine), Tufted evening, primrose (Fragrant evening primrose), Tufted knotweed, Tumble mustard, Tumble pigweed, Velvetleaf, Venice mallow, Vetch (Common vetch, Garden vetch), Vine maple, Violet woodsorrel, Virginia buttonweed, Virginia creeper, Virginia pepperweed (Peppergrass), Virginia winged rockcress, Wandering cudweed, Water pennywort, (Floating, marshpennywort), Wavyleaf thistle (Gray thistle), Western clematis, Western ragweed, Western salsify (Goatsbeard), White ash (American ash), White clover (*Dutch clover, Honeysuckle clover, White trefoil, Purplewort), White mustard, White prairie aster, White sweet clover (White melilot), Whitestem filaree, Whitetop, Wild blackberry (Thornless blackberry), Wild buckwheat, Wild carrot, Wild cherry, Wild four-o'clock, Wild garlic (Wild onion), Wild honeysuckle (Tartarian honeysuckle), Wild lettuce, Wild marigold (Roundleaf marigold, Southern marigold), Wild morning glory (Hedge bindweed), Wild plum (American plum), Wild radish, Wild rose (Prickly wild rose), Wild strawberry, Wild sweet potato, Wild vetch, Wild violet, Willow-leafed poplar (Narrowleaf cottonwood), Winter speedwell (Persian speedwell), Wood nettle, Woolly croton (Hogwort,
Goatweed), Woolly morning glory, Woolly plantain, Woollyleaf bursage, Wooly burdock (Downy burdock), Wooly locoweed, Wormseed, Wormseed mustard, Wreath goldenrod, (Woodland goldenrod), Wrinkleleaf goldenrod (Roughstemmed goldenrod), Yarrow (Common yarrow), Yellow birch (Golden birch), Yellow nutsedge, Yellow rocket (Winter cress, Bitter wintercress, Wild mustard), Yellow starthistle, Yellow sundrops (Shrubby evening primrose), Yellow sweet clover (Yellow melilot, Ribbed melilot, Common melilot), Yellow thistle (Horrible), Yellowflower pepperweed, Yellowspine thistle *annual or perennial
It is a violation of Federal law to use this product in a manner inconsistent with its labeling.
Do not apply this product in a way that will contact any person or pet, either directly or through drift. Keep people and pets out of the area during application. Do not allow people or pets to enter the treated area until sprays have dried. Do not allow spray to drift onto desirable plants since injury may result. Do not apply as a fine mist because of potential for injury to desirable plants. Do not apply when windy. Do not treat when air temperatures exceed 90°F as damage to grass may occur. Application at rates above specified on this label may cause injury to turfgrass. Do not use on floratam or bitterblue varieties of St. Augustine. Do not use on carpetgrass, dichondra, lawns with desirable clovers or legumes, vegetables, fruits or ornamentals. Do not spray exposed roots of ornamentals and trees. Do not apply more than two applications per year. You must wait at least two weeks between applications. Not for use on turf being grown for sale or other commercial use such as sod, or for seed production, or for research purposes.
Do not apply directly to or near water, storm drains, gutters, sewers or drainage ditches. Do not apply within 25 ft of rivers, fish ponds, lakes, streams, reservoirs, marshes, estuaries, bays and oceans. To prevent product runoff, do not overwater the treated area(s) to the point of runoff or apply when raining or when rain is expected that day. Rinse applicator over lawn area only.
Broadcast applications greater than 0.75 Ib Mecoprop-p acid equivalent per acre per application (1.5 Ib ae/A/yr) are prohibited. Spot treatment applications greater than 1.2 Ib Mecoprop-p acid equivalent per acre per application (2.4 Ib ae/A/yr) are prohibited.

This product is intended for use by homeowners on residential lawns including:

Cool season turfgrass: Kentucky bluegrass; fescue, including tall, red and fine leaf fescues; perennial ryegrass; zoysiagrass*
Warm season turfgrass: Bahiagrass; bentgrass; Bermudagrass; centipedegrass; St. Augustine***
**Do not apply to zoysiagrass just emerging from dormancy, as it may result in lawn damage.
***Do not use on floratam or bitterblue varieties of St. Augustine. Do not use this product on carpetgrass, dichondra, legumes or lawns containing desirable clovers.

The maximum application rate is 4 fl oz of product per 1,000 sq ft per application (0.74 lb 2,4-D acid equivalent per acre per application). The maximum number of applications is limited to two per year. The maximum seasonal rate is 8 fl oz of product per 1,000 sq ft (1.48 lb 2,4-D acid equivalent per acre), excluding spot treatments.

Apply when daytime temperatures are between 45°F and 90°F. Do not apply to zoysiagrass just emerging from dormancy.
Spring: Spray when broadleaf weeds are young and actively growing with adequate soil moisture for best results.
Fall: Spray when broadleaf weeds are young and actively growing with adequate soil moisture for best results. Fall applications will control weeds that may otherwise go dormant through the winter and resprout the following spring. ‡Visual symptoms and time to complete kill will depend on weed type, temperature and application rate.
Early summer: Two applications of this product are required when the yellow nutsedge plants are 3 to 6 inches tall. Apply the second application at the same rate 14 days later.
Spring: Apply when dandelion, plantain, buttercup, speedwell, knotweed and other listed broadleaf weeds are young and actively growing with adequate soil moisture for best results.
Fall: Apply when henbit, chickweed, white clover, ground ivy, lawn burweed and other listed broadleaf weeds are young and actively growing with adequate soil moisture for best results. Fall applications will control weeds that may otherwise go dormant through the winter and resprout the following spring.
Refer to the table in the "How to Use" tab for calculating the correct amount of product to use for the area to be treated.
The maximum application rate is 4 fl oz of product per 1,000 sq ft per application (0.74 lb 2,4-D acid equivalent per acre per application).
The maximum number of broadcast applications is limited to two per year.
The maximum seasonal rate is 8 fl oz of product per 1,000 sq ft (1.48 lb 2,4-D acid equivalent per acre), excluding spot treatments.
MEASUREMENT CALCULATIONS: Total lawn area in square feet = length x width.
  1. Shake container well before using.
  2. Connect a garden hose to the sprayer nozzle. Make sure switch is fully forward in the "OFF" position.
  3. Turn on water at faucet. Extend hose to the farthest area to be treated and work back toward the faucet so you don't come in contact with the treated area.
  4. Remove safety tab from sprayer’s right side by pulling straight out. Keep for future reuse.
  5. To BEGIN spraying, point nozzle toward treatment site and pull switch backwards with thumb towards hose connection. Water will automatically mix with the product.
  6. Spray until wet to control weeds. Walk at a steady pace, working back toward the faucet while spraying using an even sweeping motion, slightly overlapping treated areas. One quart will treat up to 21,333 sq ft of St. Augustine, 16,000 sq ft of other warm season grasses and 8,000 sq ft of cool season grasses. Calculate square feet by multiplying length by width. Refer to sight gauge to guide coverage (example: when bottle is half empty, you should have covered half the area).
  7. To STOP spraying, push switch forward with thumb toward nozzle. Turn water off at faucet. To relieve pressure before removing nozzle from hose, pull switch backwards with thumb toward hose connection until water stops spraying.
  8. To STORE unused product, make sure switch is fully forward in the "OFF" position.
  9. Reinstall safety tab into sprayer’s right side. With sprayer in the full "OFF" position, push tab into position.
  10. Place in a cool area away from heat, sunlight or open flame
Application Rates for Lawns Using the QuickFlip™ Sprayer

Total Treated Area For
32 fl oz (1 quart)

Amount of Product Applied
Per 1,000 sq ft
Warm Season Lawns

St. Augustinegrass***
Up to 21,333 sq ft
1.5 fl oz
Bahiagrass, bentgrass,
Up to 16,000 sq ft 2 fl oz
Cool Season Lawns

Kentucky bluegrass, fescue,
perennial ryegrass, zoysiagrass**
Up to 8,000 sq ft 4 fl oz
***Do not use on floratam or bitterblue varieties of St. Augustine.
**Do not apply to zoysiagrass just emerging from dormancy.

NOTE: Do not use on Floratam or Bitterblue variety of St. Augustine. If you are unsure as to what type of grass you have, contact your county extension agent

  • Some hard-to-kill weeds may require re-treatment. Wait at least two weeks between applications — some weeds can take that long to die.
  • Spray during growing season when weeds are actively growing.
  • For best results, mow lawn two to three days before treating weeds.
  • To avoid risk of lawn injury, do not spray drought-stressed lawns.
  • Watering immediately after treatment may wash away effectiveness.
  • Wait until newly seeded grass is well-established or after the third mowing before applying this product.
  • Treated areas may be reseeded three to four weeks after application.
  • Adjust nozzle to produce a coarse spray. Coarse sprays are less likely to drift. Avoid fine mists.
  • Application to zoysia lawns when they are emerging from dormancy in the spring may cause damage.
  • Overapplication, especially at 90°F or higher, may cause damage.
  • Application to Bermudagrass may cause temporary yellowing when applied at 90°F or higher, but full recovery can be expected.
Do not contaminate water, food or feed by storage and disposal.
Pesticide Storage: Store in a cool, dry area away from heat or open flame.
Pesticide Disposal and Container Handling: Nonrefillable container. Do not reuse or refill this container. If empty: Place in trash or offer for recycling, if available. If partly filled: Call your local solid waste agency for disposal instructions. Never place unused product down any indoor or outdoor drain.
Hazards to Humans and Domestic Animals
Harmful if swallowed. Wash thoroughly with soap and water after handling and before eating, drinking, chewing gum, using tobacco or using the toilet.


If swallowed: Call a Poison Control Center or doctor immediately for treatment advice. Have person sip a glass of water if able to swallow. Do not induce vomiting unless told to by a Poison Control Center or doctor. Do not give anything to an unconscious person.
Have the product container or label with you when calling a Poison Control Center or doctor, or going for treatment. You may also contact 1-800-917-5438 for emergency medical treatment information.

Environmental Hazards
This pesticide is toxic to fish and aquatic invertebrates and may adversely affect non-target plants. To protect the environment, do not allow pesticide to enter or run off into storm drains, drainage ditches, gutters or surface waters. Applying this product in calm weather when rain is not predicted for the next 24 hours will help to ensure that wind or rain does not blow or wash pesticide off the treatment area. Rinsing application equipment over the treated area of the lawn or garden will help to prevent runoff to water bodies or drainage systems.
This chemical has properties and characteristics associated with chemicals detected in groundwater. The use of this chemical in areas where soils are permeable, particularly where the water table is shallow, may result in groundwater contamination. Application around a cistern or well may result in contamination of drinking water or groundwater.

To the extent required by applicable law, buyer assumes all responsibility for safety and use not in accordance with directions.

Questions & Comments? Call 1-800-917-5438 or visit our website at www.spectracide.com