Liquid Harvest Mesotrione 32oz Concentrate - Pre & Post-Emergent Weed

In this review of Liquid Harvest Mesotrione 32oz concentrate, the bottom line is straightforward: this is a targeted herbicide for lawn stewards who need reliable control of both broadleaf weeds and certain grassy weeds while protecting desirable turf. The product begins to work on contact and moves through the plant so users see visible effects within days, with full weed death typically by two to three weeks. It requires moisture to activate, so a short follow-up rainfall or a light irrigation is essential for best results.

Key Features

• Active ingredient: Mesotrione absorbs quickly and inhibits photosynthesis in susceptible plants, causing visible damage within days and death over weeks.
• Broad target range: Controls up to 46 broadleaf species and grassy weeds such as barnyard grass, carpetweed, chickweed, clover, crabgrass, and dandelion for versatile yard use.
• Pre- and post-emergent action: Prevents crabgrass seed germination and eliminates existing broadleaf weeds, combining both preventative and curative utility.
• Turf compatibility: Labeled for use on many cool- and warm-season turfs including Kentucky bluegrass, tall fescue, perennial ryegrass, and centipede when used as directed.
• Systemic movement: Distributes through roots and foliage so it can reach weeds not fully covered by spray, improving overall control.
• Irrigation requirement: Needs about 0.15 in of water within 10 days to activate when no rainfall occurs, making timing important for reliable results.

Who It's For

This product is best for homeowners, landscapers, and lawn care enthusiasts who manage lawns with common broadleaf weeds and want a single concentrate that can be used both before and after weed emergence. It is particularly useful for those growing cool-season grasses like Kentucky bluegrass, tall fescue, perennial ryegrass, and fine fescue, as well as certain warm-season grasses listed on the label.

Those who should look elsewhere include owners of lawns dominated by bentgrass, Poa annua, kikuyugrass, zoysiagrass, seashore paspalum, or bermudagrass in active growth, since the product can damage those turf types. Users who cannot reliably irrigate or expect long dry spells after application should consider a herbicide that does not require activation by water.

Pros & Cons

Pros

• Effective at both preventing crabgrass germination and killing many existing broadleaf weeds, delivering visible results within days.
• Systemic action helps control weeds beyond the immediate spray contact area by moving through roots and leaves.
• Compatible with several common turfgrasses when used according to label directions, protecting desirable lawn species.
• Concentrated 32oz bottle is convenient for mixing and multiple applications at correct rates.

Cons

• Requires 0.15 in of water within 10 days to activate if there is no rainfall, so timing and irrigation access matter.
• Not safe on several turf types such as bentgrass, Poa annua, and actively growing bermudagrass, limiting use on some lawns.

Specifications

Product type	Mesotrione herbicide concentrate
Volume	32 oz
Action	Pre- and post-emergent control
Target weeds	46 broadleaf species and grasses including crabgrass and dandelion
Turf labeled	Kentucky bluegrass, tall fescue, perennial ryegrass, fine fescue, centipede, buffalo, St. Augustine (sod only)
Irrigation need	Apply 0.15 in water if no rainfall within 10 days
Mode of action	Inhibits photosynthesis; systemic translocation

Our Verdict

Liquid Harvest Mesotrione 32oz concentrate is a practical choice for lawns matching the labeled turf types that need both pre- and post-emergent control of broadleaf and certain grassy weeds. It offers systemic, reliable control when users follow label directions on irrigation and turf restrictions, making it good value for those who want a single product to tackle common lawn weeds without harming compatible grasses.

Frequently Asked Questions

How soon will I see results?
Visible damage can appear in about four days, with full weed death commonly occurring in two to three weeks.

Do I need to water after application?
Yes, if there is no rainfall within 10 days you should apply roughly 0.15 in of water to activate the product.

Can I use this on bermudagrass?
Do not use on actively growing bermudagrass; it can be used on dormant bermudagrass to eliminate weeds according to label instructions.