No, Celsius WG Herbicide is safe on warm season lawns such as Bermuda. It will not harm it any way. Depending on what type of fescue you have, Gordons Ornamec 170 Grass Herbicide is labeled to control bermuda.
Please be advised that Bermuda grass is extremely difficult to control and you will likely need to make several applications no matter which product is used and multiple seasons at times. Best time to apply products to control it is in fall as it is starting to go back into dormancy or the spring when it is coming back out of dormancy.Some ornamentals may be sensitive to Celsius WG Herbicide and since it wasn't tested for use on ornamentals it is best to try and avoid spraying them with Celsius. We would recommend only spot treating weeds directly inside the dripline of trees/shrubs and avoiding any contact with exposed roots or the trees themselves.
For the control of Johnsongrass, Celsius WG Herbicide recommends applying at the rate of .057 oz per 1k square feet. In order to determine how much water to use, you will need to calibrate your sprayer. Here is a video to assist with that
Per the product label: For broadcast applications, use a minimum of 10 gallons of water per acre. For weed control in dense weed populations, control of weeds under adverse growing conditions, or control of mature weeds, the optimum spray volume is 60 gallons per acre.
Celsius is only labeled to be used on Warm-Season Turf Types Only in Commercial and Residential Sites, it is not labeled to be used in any type of hay field or pasture where animals graze.
Celsius WG Herbicide is a post-emergent so therefore it would not effect the seeds, it would only effect germinated seeds. If you are looking for a pre-emergent. You can consider Pendelum 2G Herbicide and verify with your local extension office for optimal timing for prevention on buttonweed in your area.
Celsius WG Herbicide is labeled to kill paspalum grass and should not be applied to it if that is a desired grass type.
Celsius is applied at three different rates depending on the weeds to be controlled. For the appropriate rate, consult the USE RATES FOR WEED CONTROL section on the Celsius product label.
Celsius WG Herbicide is not labeled for matchweed.
Celsius WG Herbicide would be mixed at the rate of 0.085 oz (2.4 g) of product per 1,000 sq ft in at least 1 gallon for red and tall fescue only per the product label.
Celsius WG Herbicide is not labeled for treating algae.
Celsius WG Herbicide is not labeled for tumblegrass. Unfortunately, we are not aware of any products on our website labeled for this type of grassy weed. You may want to reach out to your local Cooperative Extension office for recommendations on controlling this plant in your landscape.
Celsius WG Herbicide is applied at 0.113 oz per 1000 sq ft for Virginia Buttonweed on St. Augustine lawns.
For spot treatments, mix 0.057-0.113 oz (1.6-3.2 g) of Celsius WG Herbicide per gallon and apply until weeds are wet. One gallon of spray solution will treat up to 1000 sq ft. Per the product label, a second application of this product may be needed for control. If weeds are showing signs of recovery, make a second application 2-4 weeks after the first.
To decrease the effects of Celcius WG Herbicide injuring the lawn, you could have possibly used an activated charcoal product within hours of the application and watered the area a lot. At this point, it may be too late, and only time will tell. We would recommend watering the area very well and contacting the manufacturer (Bayer) directly at 800-331-2867 for more information.
Celsius Herbicide should not cause fungus in your lawn when used as directed on the product label. For more information, we would recommend contacting the manufacturer (Bayer) directly at 800-331-2867.
With an herbicide like Celsius WG and many others, if sodding is not stated specifically on the label we recommend waiting at least 3-4 weeks after an application of Celsius before putting down the new zoysia sod.
