Most areas in Canada along the U.S. border are at least half a zone higher now. The changes in hardiness zones is more pronounced in western Canada: Vancouver 7a to 8b.
大部分植物都可以种了。渥太华是5a，不少植物会过不了冬。
大部分植物都可以种了。渥太华是5a，不少植物会过不了冬。
