The popular TX x KBG cross, tested as HB 129. Expanding the area of adaptation for bluegrasses, TX x KBG types have been successful farther south than traditional Kentucky bluegrasses, and are adding heat tolerance and summer performance to northern zone turf. Thermal Blue produces a high percentage of living ground cover throughout the summer, recovers quickly from drought, and is resistant to brown patch. With its aggressive rhizomes, Thermal Blue improves the ability of tall fescue turf to recover when combined in a mixture. Thermal Blue is an elite and medium-bladed bluegrass for landscape contractors, sports turf managers, and golf course superintendents who are battling the stress of summer heat. Limited availability in Professional Turfgrass markets only.