When to apply Grub Control in Colebrook, NH for St. Augustine grass
Insect Control Schedule
This insect control plan utilizes Growing Degree Days of Japanese Beetles to determine wehn to apply grub and insect control in Colebrook, NH. The date listed below is based on average historic temperatures in your area. These should only be used as a guideline, and actual weather forecasts should be used to determine actual dates.
For your location, you can apply pre-emergent on any date as it's warm enough year round.