Climate and Soil
Manitoulin lies within plant hardiness zone 5a. From May-October 2015, the District experienced an average of 364 mm of precipitation, 1,683 growing degree days and 2,675 crop heat units. Manitoulin sits mainly in climate zone E, with the western tip occupying zone F and its eastern end in zone D. Soils in the district are derived from calatic or dolomite limestone and are generally pH neutral. Over 70% of the island is covered with soils thinner than one foot above bedrock or with no soil cover at all.