Cynthia from Nc writes
Q4 Plus Turf Herbicide is rainfast after 6 hours but is best applied when there is no rain expected within 24 hours after application. It is more if there are dry conditions that you need to water 24 hours before or after application. Per the product label if rainfall is not expected within 2 - 7 days you should water in yourself 1/2 inch as recommended.
Answer last updated on: 06/14/2021