Will Weed-B-Gon Kill Rye Grass?

Southern Lawns Formula

• Available as a ready-to-use spray or a concentrate, Ortho Weed-B-Gon Weed Killer for Southern Lawns is safe for ryegrass, according to the product label. Available only in the Southeastern states, the herbicide may be sprayed twice per year with applications at least 30 days apart. Wait three to four weeks before treating newly sodded lawns.

  Mix 4 tablespoons of concentrate to 1 gallon of water to treat 400 square feet of lawn. If a hose-end sprayer is used, set the dial to 2 ounces and add 5 ounces of concentrate to the bottle. Set sprayer nozzle on either type of sprayer to a broad, coarse spray.

Weed Killer Max

• Ortho Weed B Gon Max and Weed B Gon Max with Crabgrass Killer may be packaged in ready-to-use form or as a concentrate. Regular "max" formula concentrate should be mixed at the rate of 2.5 ounces per gallon of water, and the formula with added crabgrass killer requires 2 ounces per gallon of water for tank sprayers. For each 1,000 square feet of lawn, add 4 ounces of crabgrass formula to hose-end sprayer jars and do not add water. Spray thoroughly and evenly. Wait three to four weeks before making a second application, and do not apply more than twice per year.

Original Weed Formula

• Ortho Weed B Gon and Weed B Gon Weed Killer for Lawns Plus Crabgrass Control come in ready-to-spray or concentrate. For every 400 square feet of lawn, mix 4 tablespoons of concentrate to 1 gallon of water in a tank-type sprayer. Set the spray nozzle for a coarse spray to avoid turning herbicide into a mist that can drift uncontrollably. A hose-end sprayer should be set on 2. Add 10 tablespoons (5 ounces) of concentrate to the bottle and turn on the hose. Using ready-to-spray or concentrated mixtures, spray the lawn thoroughly, making sure the weeds get wet.

Tips and Warnings

• Keep pets and children out of the treated area until the weed killer is completely dry. Begin spraying at the far end of the lawn to avoid walking through the treated area.

  Ortho weed killers are rainproof one to two hours after application.

  Spray thoroughly and evenly but not to the point of runoff. Avoid spraying on windy days, as herbicide may drift to and injure desirable plants. Keep herbicide off of tree roots and out of flower or vegetable gardens.

  Mixing a stronger formula than called for on the product label can injure or kill the grass you are trying to protect. Always read and follow label directions carefully.