If you’ve ever wondered what the zone number means on your plant tag this video is for you!! Our Canadian planting zones help us determine the hardiness of plants, our zone maps take into account minimum winter temperatures, duration, rainfall, frost free days and other factors. The US plant zone maps take into account minimum winter temperature. There is a half to full zone difference between the two so a zone 7 plant on the US scale will be a zone 8 on the Canadian Zone maps. The lower the num