Amanda from Chapel Hill, Tn writes
I've got a section of TTTF lawn that is being invaded with bermudagrass, and we are experiencing an unseasonal heat wave for June in my area. Running out of time to get this down before the heat sets in for good this summer. What can I expect if I go ahead and spray the next time temps are below 85 degrees? The infestation is so bad, I'm looking at a glyphosate kill off this fall if I don't get the bermuda under control with the Ornamec, so I'm more than willing to risk some damage to the fescue. That said, I would love to know what I can expect if I go ahead and spot spray the Ornamec. The TTTF is irrigated and not showing signs of distress. Also, is there a better time of day to spray? In the evening?
The manufacturer does advise only to apply Gordons Ornamec Over-The-Top Grass Herbicide in the Spring and the Fall for the control of Bermuda in tall fescue, and advises extreme caution when applying in the hot summer months of July and August, according to the product label. It would not be advisable to apply this product if the current temperatures are unseasonably high. In general, during summer months when temperatures reach their hottest during the day, herbicides should be applied in the early morning or late afternoon evening when they are at the coolest for the day (between 65-85 degrees) to prevent inurying desirable turf.
Answer last updated on: 06/14/2022
