What is a hardiness zone?
A hardiness zone refers to several key parameters that describe the climate. The amount of precipitation, the average temperature during the coldest month, the number of frost-free days are examples of parameters that come into play in the calculation of the hardiness zone. In Canada, this scale is graduated between 0 and 9, 0 being the coldest. The hardiness zone gives an idea of the vegetation that could be found on a territory.