--- product_id: 16247060 title: "Primesource Quinclorac 1.5L Select Liquid Crabgrass Killer (64 ounces), White" brand: "primesource" price: "S$177" currency: SGD in_stock: true category: "Primesource" url: https://www.desertcart.sg/products/16247060-primesource-quinclorac-1-5l-select-liquid-crabgrass-killer-64-ounces store_origin: SG region: Singapore --- # Controls 15+ tough weed species Selective post-emergent herbicide Safe on many turf types Primesource Quinclorac 1.5L Select Liquid Crabgrass Killer (64 ounces), White **Brand:** primesource **Price:** S$177 **Availability:** ✅ In Stock ## Summary > 🌱 Own your lawn’s future—weed-free and flawless every season! ## Quick Answers - **What is this?** Primesource Quinclorac 1.5L Select Liquid Crabgrass Killer (64 ounces), White by primesource - **How much does it cost?** S$177 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/16247060-primesource-quinclorac-1-5l-select-liquid-crabgrass-killer-64-ounces) ## Best For - primesource enthusiasts ## Why This Product - Trusted primesource brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Generous Coverage:** 64 oz liquid treats up to 500 sq ft, perfect for manicured lawns - • **Rapid Action Window:** Apply from 7 days before seeding up to 28 days after weed emergence - • **Versatile Application:** Effective on residential & commercial turf for ultimate flexibility - • **Broad Spectrum Control:** Eliminates over 15 stubborn weeds including dandelion, clover & foxtail - • **Precision Turf Protection:** Targets crabgrass & broadleaf weeds without harming your lawn ## Overview Primesource Quinclorac 1.5L Select is a powerful, selective post-emergent herbicide formulated with 18.92% quinclorac. Designed for both residential and commercial turf, it effectively controls a wide range of broadleaf and grassy weeds including crabgrass, foxtail, and dandelion. With a flexible application window and coverage of up to 500 square feet per bottle, it ensures a pristine, weed-free lawn without damaging your grass. ## Description Quinclorac 1.5L Select™ is a selective, post-emergent herbicide that can be applied to many types of turf, both residential and non-residential, to control a variety of weeds. Quinclorac 1.5L Select™ can be applied from 7 days before seeding and up to 28 days after emergence on selected weeds. ## Features - KEY FEATURE: Selective, post-emergent herbicide that can be safely applied to many types of turf to control a variety of broadleaf and grassy weeds - USE SITES: Residential Turfgrass & Non-Residential Turfgrass - EFFECTIVE AGAINST: Crabgrass (large & smooth), Foxtail (giant, green & yellow), Kikuyugrass, Signalgrass (broadleaf), Torpedograss, Bindweed (field), Clover (hop, red & white), Daisy (english), Dandelion, Dollarweed, Geranium (Carolina), Morningglory spp., Speedwell (common, slender & thymeleaf) - ACTIVE INGREDIENT: Quinclorac 18.92% ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00Z7XF438 | | Active Ingredients | Herbicide, Quinclorac | | Best Sellers Rank | #36,088 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #275 in Weed Killers | | Brand Name | Primesource | | Coverage | 500 square feet | | Customer Reviews | 4.4 4.4 out of 5 stars (730) | | Included Components | Herbicide | | Item Form | Liquid | | Item Weight | 0.27 g | | Liquid Volume | 1500 ml | | Manufacturer | Prime Source | | Model Number | 51507PS1405 | | Part Number | 51507PS1405 | | UPC | 794504353969 | | Unit Count | 64 Fluid Ounces | ## Product Details - **Active Ingredients:** Herbicide, Quinclorac - **Brand:** Primesource - **Item Form:** Liquid - **Item Weight:** 0.27 g - **Liquid Volume:** 1500 ml ## Images ![Primesource Quinclorac 1.5L Select Liquid Crabgrass Killer (64 ounces), White - Image 1](https://m.media-amazon.com/images/I/71-hrjpVj+L.jpg) ![Primesource Quinclorac 1.5L Select Liquid Crabgrass Killer (64 ounces), White - Image 2](https://m.media-amazon.com/images/I/91MWwvZoMhL.jpg) ![Primesource Quinclorac 1.5L Select Liquid Crabgrass Killer (64 ounces), White - Image 3](https://m.media-amazon.com/images/I/81J8LUKS0iL.jpg) ![Primesource Quinclorac 1.5L Select Liquid Crabgrass Killer (64 ounces), White - Image 4](https://m.media-amazon.com/images/I/81DZa9oZM3L.jpg) ![Primesource Quinclorac 1.5L Select Liquid Crabgrass Killer (64 ounces), White - Image 5](https://m.media-amazon.com/images/I/81EwnH26R2L.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: Will this kill other weeds in the lawn? Dandelion, ground ivy, or violets?** A: Here is a weed list.. It may not be all inclusive but should answer your question.. Barnyardgrass Bindweed, field Clover, hop Clover, red Clover, white Crabgrass, large Crabgrass, smooth Daisy, English Dandelion, common Dollarweed Foxtail, giant Foxtail, green Foxtail, yellow Geranium, Carolina Kikuyugrass Medic, black Morningglory spp. Signalgrass, broadleaf Speedwell, common Speedwell, slender Speedwell, thymeleaf Torpedograss Violet, wild Thanks for considering using Keystone Pest Solutions to purchase this product! **Q: does it work on zoysia grass without damaging the zoysia?** A: The instructions say yes which is why I purchased it. Just. completed the first application last week and you can see the torpedo grass turning yellow and no damage to the zoysiia grass. This product requires multiple treatments (every 14 days) until torpedo grass is dead so will see how the remaining treatments work. **Q: The instructions say "for use in new york state by spot treatment only". can it not be used elsewhere?** A: It can be used elsewhere. States dictate how a product can be used in their state. Those instructions apply to New York. New York cannot broadcast spray. They can only spot spray. Please read and follow all label instructions. Thank you. **Q: can this product be mixed with other weed killers ?** A: Quinclorac can be mixed with other herbicides, but you need to review all product labels to determine mixing order and compatibility. Also, be sure to use Methylated Seed Oil (MSO) as a surfactant when using Quinclorac. Be sure the other herbicides allow MSO as a surfactant. ## Frequently Bought Together - Primesource Quinclorac 1.5L Select Liquid Crabgrass Killer (64 ounces), White - Southern Ag Methylated Seed Oil (MSO) Surfactant (Quart - 32oz) - Southern Ag Surfactant for Herbicides Non-Ionic, 16oz, 1 Pint --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sg/products/16247060-primesource-quinclorac-1-5l-select-liquid-crabgrass-killer-64-ounces](https://www.desertcart.sg/products/16247060-primesource-quinclorac-1-5l-select-liquid-crabgrass-killer-64-ounces) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-07-24*