Aa from Laurel writes
Waiting for fall temperatures to start my first split app treatment. Few questuons please. 1. Can I mix prodamine, Isoxaben and biostimulants like RGS? 2. I have Tall fescue and do I need to mow my lawn with 3" or 4" height before spraying? Thank you!
Isoxaben 75 WG Herbicide can be applied at the same time or same day with Prodiamine 65 WDG. We carry one Root Growth Stimulator labeled for lawns, Cutless 0.33G Landscape Growth Regulator but it is not for use by homeowners.
You will want to refrain from mowing 2 days before your application and 2 days after application. Ideally, fescue grass blades should be kept at 2-3 inches long. If you have let your grass grow long during the cold winter months, you can do an initial mowing during the spring, but do not take off more than 1/3 of the length of grass or else the grass may become stressed. Mow every 2-3 weeks as needed and ever week during the spring. Once grass growth slows, typically in the summer months, mow less frequently.
Answer last updated on: 07/27/2021
