Yes, Fusilade II is labeled for post-emergent control of large, smooth, and southern crabgrasses. Be sure to follow the product label directions to be sure it is safe to use in the area where you plan to apply it, and to use a non-ionic surfactant when applying Fusilade II. You can also view all our Crabgrass Products here.
Fusilade II Herbicide can be used to remove Bermuda grass from zoysia grass when used at reduced rates. Applications should be made around June 1st per the product label.
Apply 0.07-0.14 oz/1000 sq. ft. (3-6 oz./A) along with 0.25% v/v (1/2 pt./25 gals.) of a nonionic surfactant. Application should be made every 28 days when the grass weeds are actively growing.
Keep in mind for herbicides the amount of water is not important. What is important is getting the correct amount of product, over the correct amount of area. Mark off 1000 sq/ft and fill your sprayer tank with only water. Spray as if you were covering the area with the herbicide. However many gallons it takes you to cover that area is how many gallons to mix the product with. Everyone's walking speed and how heavily they spray is different, which is why whether you use 2 gallons or 8 gallons of water to cover 1000 sq/ft, you are correct.
Usage chart for spot treatments:
1 gallon water + .75 fl oz of Fusilade + .5 oz surfactant
10 gallons water + 6.5 fl oz Fusilade + 3 oz surfactant
25 gallons water + 1 pint Fusilade + .5 pint surfactant
50 gallon water + 1 qt Fusilade + 1 pint surfactant
No, Fusilade II Herbicide is not labeled to be used on St. Augustine grass. We would like you to direct your question to Syngenta, the manufacturer of Fusilade, as they are the true experts on their own product and can better answer your question. You can reach them at 1-866-SYNGENTA.
Updated Jan 2025:Fusilade is not labeled to be used on St Augustine for bermuda grass control when tank mixed with Recognition Herbicide. Following these instructions Recognition Herbicide 2(ee) Supplemental Label-St. AugustineFusilade will not kill sedges. Grass out will kill canary grass. We really need to know where you would be applying the herbicide to ensure the product will not harm your grass. What tyoe of turf grass so you have?
Apply 0.07-0.14 oz/1000 sq. ft. (3-6 oz./A) along with 0.25% v/v (1/2 pt./25 gals.) of a nonionic surfactant. Application should be made every 28 days when the grass weeds are actively growing. The higher rates may result in temporary discoloration of the desirable turf with recovery in 10-14 days. Do not apply to desirable turf which is under stress. For best results, make applications in spring and fall and avoid treatments during July and August.
Complete control of undesirable grass may take 1-2 growing seasons.
Keep in mind for herbicides the amount of water is not important. What is important is getting the correct amount of product, over the correct amount of area. Mark off 1000 sq/ft and fill your sprayer tank with only water. Spray as if you were covering the area with the herbicide. However many gallons it takes you to cover that area is how many gallons to mix the product with. Everyone's walking speed and how heavily they spray is different, which is why whether you use 2 gallons or 8 gallons of water to cover 1000 sq/ft, you are correct.