Daylilies are cold-hardy all the way up to the Canadian border. I live on the Wisconsin-Illinois border where it reached -24F this winter and the daylilies are growing like crazy in the ground. I merely much them in late fall. Reply
Daylilies are cold-hardy all the way up to the Canadian border. I live on the Wisconsin-Illinois border where it reached -24F this winter and the daylilies are growing like crazy in the ground. I merely much them in late fall.