When To Apply Barricade - Spring and Fall
Barricade is a pre-emergent weed control, which means that is designed to prevent weeds. Application timing is critical to the product's performance.
To prevent summer annual weeds in both northern and southern turf types, apply Barricade in early spring prior to soil temperatures reaching 55 degrees Fahrenheit at a four inch depth. Applying at this time will prevent weed seeds from germinating.
In southern zones, Barricade can be reapplied in the fall to prevent annual winter weeds like poa annua, also known as bluegrass.
Remember, Barricade must receive irrigation or light rainfall of at least .05 inches for the herbicide prevention to activate.