---
product_id: 152757609
title: "Meso 4 SC Select"
brand: "primesource"
price: "£36.37"
currency: GBP
in_stock: true
reviews_count: 8
category: "Primesource"
url: https://www.desertcart.co.uk/products/152757609-meso-4-sc-select
store_origin: GB
region: United Kingdom
---

# Systemic absorption via leaves, roots & shoots Pre & post-emergent control Covers up to 8,000 sq ft per bottle Meso 4 SC Select

**Brand:** primesource
**Price:** £36.37
**Availability:** ✅ In Stock

## Summary

> 🌱 Own the lawn everyone envies—weed-free, effortlessly.

## Quick Answers

- **What is this?** Meso 4 SC Select by primesource
- **How much does it cost?** £36.37 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/152757609-meso-4-sc-select)

## 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

- • **Seeding Friendly:** Safe to apply anytime—even during overseeding or turf renovation—so your lawn stays flawless.
- • **Systemic Powerhouse:** Absorbs through leaves, roots, and shoots to eradicate weeds from the inside out.
- • **Long-Lasting Coverage:** One 8 oz bottle treats up to 8,000 sq ft, delivering premium value and extended protection.
- • **Dual-Action Weed Control:** Kills over 45 tough weeds pre- and post-emergence for a pristine lawn all season.
- • **Trusted by Pros & Homeowners:** Highly rated with 4.5 stars and proven results that keep your turf weed-free and envy-worthy.

## Overview

Primesource Meso 4 SC Select is a potent group 27 herbicide designed for both pre- and post-emergent control of over 45 broadleaf weeds and grasses. Its systemic action inhibits photosynthesis, targeting weeds through leaves, roots, and shoots without harming turfgrass. Suitable for use during seeding, overseeding, or renovation, this 8-ounce liquid covers up to 8,000 square feet, making it a cost-effective solution for maintaining a pristine, weed-free lawn.

## Description

Meso 4SC Select is a herbicide that can be used for both pre and post-emergence control of more than 45 broadleaf weeds and grasses in turfgrass. Classified as a group 27 herbicide, Meso 4SC Select inhibits photosynthesis in susceptible plants and is absorbed systemically through leaves, roots and shoots. Can be effectively used for weed control prior to and when seeding of specific types of turfgrasses.

Review: This Stuff Works!!! - For years here in the mid-Atlantic (Virginia), I've had problems with chickweed and various other weeds growing over the winter season. After doing AI research, I discovered Meso4 SC. It works! It doesn't kill the grass -- it just kills the weeds. Here's what I did ... I bought a one gallon sprayer and added one teaspoon of Meso (with the use of the syringe that comes with the product) to one gallon of water. I shook it well and pumped the sprayer about a dozen times to ensure a good fine spray. I tested the spray on the sidewalk and then I proceeded to spot-spray each cluster of chickweed and other weeds. In the photos below, you can see the resulting yellowish-white spots in the lawn. Within days, the weeds were wilting and the surrounding grass turned a bit lighter, but the lawn didn't otherwise suffer. After a week or so, I mowed the lawn and it's just about perfect. After another mowing or two, it will be as green as ever. At this rate, this 8-ounce bottle should last for years. It's so refreshing when something works as advertised and is as easy to use as this.
Review: Good stuff! Cheaper than tenecity! - Weeds start turning white within 4-7 days! Be sure to get surfactant! One application took the weeds out! Has preventative as well, I assume it'll prevent the weed seeds from geminating so less weeds in the future

## Features

- Not For Sale to AZ, OR, WA, NM, MT, ID, WY, NV, AK,HI
- Provides post-emergent control of tough-to-control weeds
- Weeds controlled include crabgrass (pre- and post-emergent), ground ivy, yellow foxtail, yellow nutsedge and dandelion
- Can be applied anytime you are seeding including overseeding of established turfgrass, bare ground seeding or during renovation.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07L3S9FKX |
| Active Ingredients | Mesotrione |
| Best Sellers Rank | #41,730 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #256 in Weed Killers |
| Brand | Primesource |
| Brand Name | Primesource |
| Coverage | 4000-8000 square feet |
| Customer Reviews | 4.5 out of 5 stars 1,283 Reviews |
| Included Components | 1 bottle and 1 syringe |
| Item Form | Liquid |
| Item Weight | 0.01 Ounces |
| Liquid Volume | 8 Fluid Ounces |
| Manufacturer | Prime Source |
| Model Number | MESO 4SCSEL12X8 |
| Part Number | MESO 4SCSEL12X8 |
| UPC | 653341837493 |
| Unit Count | 4.0 Ounce |

## Product Details

- **Active Ingredients:** Mesotrione
- **Brand:** Primesource
- **Item Form:** Liquid
- **Item Weight:** 0.01 Ounces
- **Liquid Volume:** 8 Fluid Ounces

## Images

![Meso 4 SC Select - Image 1](https://m.media-amazon.com/images/I/61gUTZudYyL.jpg)
![Meso 4 SC Select - Image 2](https://m.media-amazon.com/images/I/71xg1aOtz3L.jpg)
![Meso 4 SC Select - Image 3](https://m.media-amazon.com/images/I/815rmF-G1NL.jpg)

## Questions & Answers

**Q: Why can it not be sold to those of us in the restricted states mentioned above?**
A: Pretty sure because they haven't applied for it to be registered. If it is the exact formula as Tenacity, then Tenacity is only restricted in AK and PR. There is another generic 40% mesotrione product restricted in less states than this Meso 4SC,  AK, AZ, CA, HI, and this one is ok for CA.
https://www.amazon.com/ITS-Supply-Torocity-Mesotrione-Herbicide/dp/B08D8MBSK1

**Q: Will this kill violets?**
A: Wild Violet (Viola pratincola) is listed as a weed controlled by MESO 4SC

**Q: Will this kill Nimblewill?**
A: Nimblewill is controlled by Meso4 SC but will require a second application.  I have Copied a portion of the manufacturer's label below:

WEEDS CONTROLLED USING POST-EMERGENCE APPLICATION: Make a second application of Meso 4 SC Select 2-3 weeks after initial treatment.  For optimal control add a NIS-type surfactant and apply to young, actively growing weeds.

**Q: Will this kill clover?**
A: Barnyardgrass, Creeping Bentgrass , Annual Bluegrass, Carpetweed, Chickweed, Clover, Crabgrass, Dandelion, Foxtail, Ground Ivy, Henbit, Marestail, Yellow Nutsedge, Oxalis, and others
* See Label for complete list

Thank You
Nina C

## Customer Reviews

### ⭐⭐⭐⭐⭐ This Stuff Works!!!
*by D***E on March 19, 2026*

For years here in the mid-Atlantic (Virginia), I've had problems with chickweed and various other weeds growing over the winter season. After doing AI research, I discovered Meso4 SC. It works! It doesn't kill the grass -- it just kills the weeds. Here's what I did ... I bought a one gallon sprayer and added one teaspoon of Meso (with the use of the syringe that comes with the product) to one gallon of water. I shook it well and pumped the sprayer about a dozen times to ensure a good fine spray. I tested the spray on the sidewalk and then I proceeded to spot-spray each cluster of chickweed and other weeds. In the photos below, you can see the resulting yellowish-white spots in the lawn. Within days, the weeds were wilting and the surrounding grass turned a bit lighter, but the lawn didn't otherwise suffer. After a week or so, I mowed the lawn and it's just about perfect. After another mowing or two, it will be as green as ever. At this rate, this 8-ounce bottle should last for years. It's so refreshing when something works as advertised and is as easy to use as this.

### ⭐⭐⭐⭐⭐ Good stuff! Cheaper than tenecity!
*by H***. on March 26, 2026*

Weeds start turning white within 4-7 days! Be sure to get surfactant! One application took the weeds out! Has preventative as well, I assume it'll prevent the weed seeds from geminating so less weeds in the future

### ⭐⭐⭐⭐ On St Augustine vs oxalis: yes
*by C***F on March 31, 2022*

Okay, I've had a very tough lawn problem which, because I live in So. California, has been almost impossible to solve. The oxalis (kind of clover with little yellow flowers) has been coming in every winter and it has gotten so bad that you really can't see the St Augustine anymore. It all dies back by about April or May, but blocking the sunlight all winter is really done a terrible number on the grass. Anyway I finally decided I would try to get rid of it by whatever means necessary, except that most herbicides you can apply to St Augustine aren't available in California, and most of the things that are available in California you can't apply to St Augustine or don't kill oxalis. You see the catch 22 there? So this product says you really shouldn't apply it to St Augustine either, unless it's being grown "at a sod farm". Well that's puzzling to me I don't really get it, so I decided to take the risk cause I didn't have much to lose. I think the risk is it may turn your grass white. But that seems to be a temporary thing and the grass can come back. At any rate I sprayed it on at a point in Feb. at which you could really only see all the oxalis anyway. I hadn't mowed the lawn and at least 8 weeks to let the oxalis grow up above the grass. I tried not to get too much on the grass itself. About 3 weeks after the first application the oxalis had withered and turned kind of a yellow color but it was still there. So as directed I put on a second application. About 3 weeks after that and the oxalis is pretty well gone. So even though on the second application I got probably more of the product on the grass, the grass really wasn't harmed too much. It kind of is a bit on the pale side but not white, and even that is now starting to disappear and a deeper green is forming. It's been probably five weeks after the second application and the lawn is really looking great and there's very very few weeds of any kind in it. Pretty thrilled. So my basic message is, if you have St Augustine and you're at your wit's end you might as well try this even though the label says it's not a great idea. I really looked all over the Internet and couldn't find a good answer to this question.

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-21*