Thanks for the correction Margaret, I phrased my question poorly. I plant for the coldest winter temperatures, which was -30 here once in 11 years. The last few years it hasn't gotten below -11. If I really want to grown something less hardy I try to protect it and/or create a special microclimate for that plant, like planting against a south facing wall. Terry > -----Original Message----- > From: owner-gardeners@globalgarden.com > [mailto:owner-gardeners@globalgarden.com]On Behalf Of Margaret > Lauterbach > Sent: Tuesday, July 24, 2001 12:35 PM > To: gardeners@globalgarden.com > Subject: RE: [gardeners] Zone question > > > At 11:56 AM 7/24/01 -0700, you wrote: > >What is your average winter low temperature? > > > >Terry > > Terry, the zone designation isn't for the average, but for the lowest > expected temp. For instance, we get winter temps down to minus 10 F., so > that's zone 6. On an average of every 10 years, our temp drops > below minus > 20, so that's zone 4. We have so many winters where our low temps are > between minus 10 and minus 20, that I prefer to regard this as > zone 5 on a > good day. If you're shelling out money for expensive trees or shrubs, > figure zone 4. But our average temperature is 22.4 degrees F above zero. > Margaret L >