Some cool season grass varieties benefit from a slightly lower mower deck setting. While there is cool-season grass available in sod form, if you live in the cool-season grass zone, then you may be best off growing your lawn from seed.Ī mowing height of between three and four inches is generally best for maintaining cool-season grasses, particularly if your lawn is predominantly tall fescue (which many cool season lawns are).

That is the reason why these grasses have most of their growth in the spring and fall. For a grass to do well in this region, they need to be adapted to flourish in places that have dramatic temperature fluctuations (for example, extremely cold winters and hot, dry summers).Ĭool Season Grasses grow best when temperatures are between 60 and 75 degrees Fahrenheit.