My plants are five years old. In the past, when the plants were new and up to four years old, I was told to keep approximately 6-8 inches away from the by the plant local MSU extension office. Now that they are five years old can I apply herbicides closer than six inches?
What do you recommend for pre and post emergent herbicides for 5 year old plants? Thank you.
Thank you for the detailed response and the links.