As I said... Aphids are often an indication that plants are somehow stressed Peter (UK) On Mon, Feb 4, 2013 at 3:20 PM, Mary Sue Ittner <msittner@mcn.org> wrote: > This is the message from Mark Mazer that has come in blank: > > For a cool greenhouse in NJ to have an infestation of brown citrus? > aphids at his time of year is an indication, > in my experience, of too much nitrogen fertilizer and that a systemic > insecticide application in the entire greenhouse might be prudent. > >