Why is Manitoba’s growing season short in the north?

Manitoba’s growing season is short in the north primarily due to the province's northern geography and climate. A significant portion of northern Manitoba lies north of the 53rd parallel, where the Canadian Shield begins.1

This region experiences a climate characterized by very cold winters and short, cool summers, which is a common feature across the northern two-thirds of Canada. Because of these challenging climatic conditions, the period available for plant growth is severely restricted compared to the southern regions of the province.21