Ortho Chickweed, Clover & Oxalis Killer Concentrate, 16 fl. oz. — Treats up to 3,200 sq. ft., rainproof in 6 hours

Ortho Chickweed, Clover & Oxalis Killer for Lawns Concentrate is a post-emergent liquid herbicide designed to eliminate broadleaf lawn weeds while preserving common turfgrasses when used as directed.

If patches of chickweed, clover, oxalis or creeping charlie are crowding your turf, this 16 fl. oz. concentrate treats up to 3,200 sq. ft. and is formulated for homeowner tank- or dial-sprayer application. It’s intended for use on Buffalograss, Fescues, Kentucky Bluegrass, Ryegrass and Zoysiagrass and becomes rainproof in about six hours. Follow label directions for dilution, application temperature limits, and grass types to avoid damage to sensitive lawns.

How quickly does this concentrate work and how soon can I expect results?

Visible yellowing or decline often appears within days, while complete control may take one to a few weeks depending on weed size and growing conditions. Results vary with weed type, turf health and weather.

• Typical visible decline in days for young weeds; mature weeds may take longer
• Safe to water lawn as directed after product has set and label timing is met
• Be patient—repeat applications may be necessary for heavy infestations

What lawns can I use this on, and which grasses should I avoid?

Use this product only on the labeled turf types—Buffalograss, Fescues, Kentucky Bluegrass, Ryegrass and Zoysiagrass—to minimize risk to turf. Do not use on Bahiagrass, Bermudagrass, Centipedegrass, Kikuyugrass or St. Augustinegrass, as injury can occur.

• Safe on listed cool- and warm-season turfgrasses when directions followed
• Read label restrictions carefully before applying to mixed or uncommon lawns
• Avoid use on newly sodded or recently seeded turf until label-specified establishment times

How do I mix and apply the concentrate for best coverage?

Mix 1 fl. oz. of concentrate per gallon of water to treat about 200 sq. ft. in a tank sprayer; this 16 fl. oz. bottle covers up to 3,200 sq. ft. for typical applications. It also works with Ortho Dial 'N Spray systems after proper dilution. Always test a small area first and follow personal protective equipment guidance on the label.

• Rate: 1 fl. oz. per gallon of water for every 200 sq. ft.
• Use a tank sprayer or compatible Ortho Dial 'N Spray after dilution
• Apply when air temperatures are below 90°F and avoid windy conditions

What weeds does this product control and how resistant is it to rain?

This broadleaf herbicide targets tough lawn weeds such as chickweed, red and white clover, oxalis, Ground Ivy (Creeping Charlie), Speedwell (Veronica) and wild violet. The formula becomes rainproof in about six hours, helping reduce loss of effectiveness if light rain occurs after application.

• Controls a range of broadleaf lawn weeds listed on the product label
• Rainproof in approximately 6 hours under normal conditions
• For heavy weed pressure, follow label advice on retreatment intervals

Who is this for: Homeowners and lawn-care enthusiasts who want a concentrated, targeted post-emergent solution for broadleaf weeds in established Buffalograss, Fescue, Kentucky Bluegrass, Ryegrass or Zoysiagrass lawns. It’s suitable for those comfortable measuring and diluting concentrates and following label restrictions to avoid harming sensitive turf types.