McHenry Community High School

Application Notice: Our State of Illinois Certified Applicators will apply T-Zone to various turf grass areas of Upper campus for the period 9/21 - 9/25/2026. Our time frame is because of State of Illinois laws involving when we can apply lawn care products. Weather and wind are a large factor. Look for “white flags” to know if an area has been sprayed. For more information see the full application notice document.