Japanese beetles on blackberries
I've been noticing Japanese beetles on my new blackberry plants (first year plants so no berries yet) and am wondering how big a problem they can become. At the moment I am just knocking them off and stepping on them as I normally only see four or five at a time. I'm hesitating to use the Sevin insecticide because of the fact you are not supposed to pick berries until seven days after you apply the insecticide and I'm not too comfortable with that. Any help will be greatly appreciated.