Tall fescue is slowly becoming a more popular choice in Iowa. It turns green in the mid-spring and maintains color into late fall. Tall fescue has the highest heat, traffic and drought tolerance of the cool-season grasses. It is well adapted to wet soils, partially shaded sites and is often used where low-maintenance lawn is desired. Tall fescue will form a deep root system that is tolerant of clay and alkaline soils. Tall fescue also has a moderate tolerance of cold temperatures, but is suitable for a majority of Iowa winters below U.S. Hwy. 20.