Whatever your choice, apply it to moistened soil -- water first, if the ground is dry -- and water after application just to the depth of the grass roots. Too much water gives crabgrass a boost, and too little might affect turf grass adversely, so water deeply, but infrequently. read more
The best time to apply crabgrass preventer is before it rains. The rain will wash the preventer off the grass blades into the soil and the crabgrass seed. How to Apply Crabgrass Preventer. Crabgrass preventer is a pre-emergent herbicide. It must be used before the crabgrass seeds have sprouted. read more
1) Temperature – at the time and for next 24 hours 2) Before and after application weather condition – 24 hours 3) Before and after water application to the lawn. – Whether lawn should be watered before or when after application 4) Best time of the day to apply. read more