Answer:

MSM Turf Herbicide is labeled to kill wild onions. With MSM turf herbicide you will need to know how much water it takes to cover 1000 sq ft of lawn as herbicides are applied at rates per 1000 sq ft, not per gallon of water. Water is only acting as the carrier so you want to ensure enough water volume is used.

To determine how much water you need, we recommend doing a “mock” application with plain water. Mark off an area of 1,000 sq ft (50ft x 20ft), fill your sprayer with plain water and apply just as you will for the application. This will tell you how much water you need per 1000 sq ft. For wild onion, the rate is 0.33 oz to 0.5 oz per acre. This breaks down to be 0.02 to 0.06 grams per 1,000 sq ft.

For example, if treating 4,000 sq ft using a 4 gallon sprayer. You would use 0.8 to 0.24 oz per 4 gallons of water covering roughly 4,000 sq feet. 

Answer last updated on: 03/22/2022