Combat Extreme™ Northern Zone - This tall fescue and Kentucky Bluegrass mix produces fine to medium leaf blades which allows a dense turf to form. This grass seed mix uses lower-growing cultivars which means that mowing requirements and clipping yields can be reduced up to 30 percent. Combat Extreme™ Northern Zone grass seed establishes rapidly when soil temperatures are above 55 degrees Fahrenheit. The varieties of turf type fescue grass were selected due to their ability to withstand hot summer temperatures as well as cold and harsh winters in USDA Zones 4 - 5. Combat Extreme™ Northern Zone grass seed has improved germination which allows it to establish more quickly than other varieties and its lower growth habit significantly reduces the amount of top growth. It does extremely well in full sun or partial shade in USDA Zones 4 - 5. Combat Extreme™ Northern Zone grass has the addition of Kentucky Bluegrass for extra cold tolerance and turf density. Combat Extreme™ Northern Zone grass seed an excellent choice for professional or home use.