Australia has both heat and cold listed as zones (re: Diggers Club - Australia) which works very well for me. Too much heat and the plants will burn not enough cold and some plants will not flower , or colour up in autumn as they should, or will simply die. Angela Albany South Western corner of Australia lovely spring sunny day - time to get off the computer and into the garden! ----- Original Message ----- From: John Bryan <johnbryan@worldnet.att.net> To: <pbs@lists.ibiblio.org> Sent: Friday, October 28, 2005 1:41 AM Subject: [pbs] Climate Zones. > > Dear All: > > I wonder what your opinions are about the USDA Climate Zones. I also > wonder why such zones cannot be linked with our zip codes, or postal > zones. Would they not then be better defined? Cheers, John E. Bryan > _______________________________________________ > pbs mailing list > pbs@lists.ibiblio.org > http://www.pacificbulbsociety.org/list.php >