SKU: 20789215443
best herbicide for crabgrass in lawn

best herbicide for crabgrass in lawn Q4 Plus Herbicide

Sale price$21.27 Regular price$23.63
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Ships within 48 hours · Estimated delivery Aug 1 - Aug 6

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Description

best herbicide for crabgrass in lawn Q4 Plus HerbicideAll in One Post Emergent Weed Control for Lawns Four active ingredients. One complete weed control solution. Q4 Plus Turf Herbicide is a professional grade, post emergent herbicide designed to control grassy weeds, sedges, and broadleaf weeds in a single application. With four powerful active ingredients working together, Q4 Plus eliminates the need for multiple products, making lawn weed control simple and highly effective. It controls tough weeds

All-in-One Post-Emergent Weed Control for Lawns

Four active ingredients. One complete weed control solution.

Q4® Plus Turf Herbicide is a professional-grade, post-emergent herbicide designed to control grassy weeds, sedges, and broadleaf weeds in a single application. With four powerful active ingredients working together, Q4 Plus eliminates the need for multiple products, making lawn weed control simple and highly effective.

It controls tough weeds like crabgrass and yellow nutsedge while also targeting common broadleaf weeds such as clover, chickweed, and dandelion. Enhanced with fertilizer components to support turf health, Q4 Plus helps your lawn recover quickly and grow thicker after weed removal.

What It Controls

  • Crabgrass
  • Yellow Nutsedge
  • Foxtail
  • Chickweed
  • Clover
  • Dandelion
  • And many other listed grassy and broadleaf weeds (see label for full list)

Why Choose Q4® Plus

  • Four-Active Formula: Controls grassy weeds, sedges, and broadleaf weeds in one product.
  • Crabgrass & Nutsedge Control: Eliminates two of the most difficult lawn weeds.
  • Broadleaf Power: Tackles clover, chickweed, dandelion, and more.
  • Fast Results: Visible weed decline in days.
  • Year-Round Flexibility: Can be applied whenever weeds are actively growing.

Lawn Types Safe for Use

  • Kentucky Bluegrass
  • Tall Fescue & Fine Fescues
  • Perennial Ryegrass
  • Annual Ryegrass
  • Bermudagrass
  • Zoysiagrass

Always verify turf tolerance and local restrictions on the product label before application.

Application Guidelines

  • Apply to actively growing weeds.
  • Use a properly calibrated sprayer for uniform coverage.
  • Avoid mowing 1–2 days before and after application.
  • Do not apply to drought- or heat-stressed turf.
  • Follow labeled rates based on turf type and weed pressure.

Best For

  • Homeowners who want one product to control multiple weed types
  • Lawns with mixed weed infestations
  • Cool-season and warm-season turf
  • Professional turf maintenance programs

Q4® Plus simplifies lawn weed control by combining crabgrass, nutsedge, and broadleaf power into one efficient, professional-grade solution.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 20789215443

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4.8 ★★★★★
Based on 12 reviews
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Product Reviews
L
Verified Purchase
linda k. bennett
Lake Worth, US
★★★★★ 5
edger
given as gift but I liked the weight and ease of handling. Seemed well made and simple to use. I was pleased with size and features.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 1, 2026
M
Verified Purchase
Movie Fan
Whiting, US
★★★★★ 3
Nice Edger as long as the blade doesn't come loose -- and it will come loose, repeatedly!
Probably could've/should've rated this 2 stars yet it works well when it works. I purchased this edger to edge my drive and sidewalks and not for trenching. The edger arrived very quickly after I ordered it (I am not a Prime member so this was a nice surprise). Assembly was easy and straight-forward. The first use went smoothly and the edger performed flawlessly and provided clean, smooth edging. About 20 minutes into the second use I noticed that the edger was cutting and quickly determined that the blade was spinning freely -- fortunately the hex nut was still attached to the threaded shaft. I reviewed the manual that came with the edger, grabbed the correct sized socket and torque wrench. I removed the hex nut, the first washer, the blade and then the second washer. To install I followed the directions ensuring that the flats of the washer aligned with the flat on the shaft and tightened the hex nut to the specified 140 in-lbs. The edger worked well for about 10 minutes and the blade once again became loose. This time I replaced the original blade (which did not need to be replaced from a wear perspective) with a new B&D blade and new washers. Once again I followed the instructions and this time the edger performed flawlessly until about 5 minutes remaining in my edging when once again the blade came loose. my experience has most certainly been frustrating to say the least. one should not need to carry a socket and torque wrench with them and repeatedly need to tighten the blade. So, when the edger performs as intended it does an excellent job at edging; however I have no confidence that this edger will be able to perform as intended throughout repeated uses and more importantly has shown that it cannot complete my edging without requiring tightening the blade (which requires disassembly down to the second keyed washer). Potential buyers should be prepared for this experience and make your decision accordingly. Note: I tried contacting black and decker via twitter (@blackdeckerhome) and never received a response; I could not find a separate customer service/support twitter account. Trying to contact customer service via the phone these days is an exercise in patience to say the least.
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Reviewed in the United States on November 11, 2022
R
Verified Purchase
Robert S.
San Leandro, US
★★★★★ 5
Trimmer results
Was alittle hesitant with this being B&D But I was surprised how great it really is. By far way above my expectations. Works like a charm and does a great job. Chose electric because I really don't have other than a driveway to do. But it really did good around the flower beds. Cord limits you alittle but nothing to cry about. Quiet also but still use ear plugs.
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Reviewed in the United States on May 9, 2026
A
Verified Purchase
Amazon Customer
Carnegie, US
★★★★★ 5
Easy to use
Style: 20V Pwr Drv Trimmer (LST522-CA)
Light weight perfect for edging around the yard.
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Reviewed in the United States on April 24, 2026
D
Verified Purchase
DonnyDJM.
Phoenix, US
★★★★★ 5
Works great-easy-breezy!
Style: 20V Pwr Drv Trimmer (LST522-CA)
Wifey loves this!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026

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