The best grasses for Wisconsin are cool-season varieties like Kentucky bluegrass and fine fescue, often combined in seed mixes. Kentucky bluegrass is a popular choice for sunny areas, while fine fescues are ideal for shade and low-maintenance lawns.
Perennial ryegrass is good for quick germination and high traffic areas, but should be included in mixtures at a lower percentage. The best time to plant grass seed is late summer to early fall (mid-August to mid-September).
Teiger Lawn Care can provide seeds or these can be purchased at any local hardware store.