It probably depends on the origen of the material, some of the Russian forms might be a good bet. I would ask Janis Ruksan, or Magnar whom I know to be very helpful, and with good English. See his website here. http://magnar.aspaker.no/ Snow cover and lack of intermittant thaw and freezing would probably be important. Peter (UK) On Wed, Jan 2, 2013 at 3:48 AM, Mary Sue Ittner <msittner@mcn.org> wrote: > This message came to the pbs website. You can respond to him directly > if you like. I've told him to follow the archives to see if anyone answers. > > Mary Sue > > From: Peter Nielsen <pnhaagar@gmail.com> > What is the hardiness zones for the reticulata and also what is the > availablity of these plants. I live in North Eastern BC with a zone > 2b - 3b Thank you, Pete > >