Kentucky Bluegrass seed is the proven & trusted variety for Manitoba climate, but the soil in which the seed grows in can differ amongst sod farms. The two varieties of soil available on the Manitoba market are mineral & peat. Mineral sod is clay based soil, and peat sod is peat moss based soil.
Mineral soil is known for its durability, and it can withstand less maintenance & more foot traffic. About 98% of lawns in Manitoba are mineral soil based.