There are four zones for grass in the United States, marked by one of these climates: warm and dry, warm and humid, cool and humid, or cool and dry. Most of Kansas, including Wichita, is in a transition zone, meaning depending on the season, it can take on the characteristics of any of the other zones.
“This is the most difficult region in which to grow grass,” the United States National Arboretum says on its website. “The transition zone is cold enough in the winter to make it difficult to maintain warm-season species and warm enough in the summer to make it difficult to grow cool-season species, therefore, no one species is well adapted in this region.”
The warm-season grasses of Bermuda, zoysia and buffalo put on their growth spurt in summer. The cool-season grasses of fescue and Kentucky bluegrass grow great guns in spring and fall. This means that the two categories of grasses are green at different times of year and, for the most part, require planting and care at different times of the year.