Follow the instructions and use the chemicals with respect and care. Keep Other Plants Safe. Surrounding plants can be easily damaged or destroyed if they are accidentally sprayed with the herbicide. But later planting where chemicals have been used is perfectly safe. Those Monsoon Rains .
Rain significantly reduces the effectiveness of the herbicide treatment.
Wait until a dry period before applying the herbicide. Commence watering the grass again 2 days after herbicide application. The grass will still be actively growing, distributing the herbicide to its roots. The grass should be dead ten days after spraying. If not, irrigate and reapply a second treatment of the herbicide.