Tahoma 31 Bermudagrass is known for both its improved cold-hardiness and improved drought-resistance. And for good reason. Tahoma 31 was bred from two cold-hardy, drought-resistant plants found in some of the most extreme landscapes on the planet. The Mother Plant was collected on a hike in the mountains on the east side of the Himalayas in China, a region known to be very cold and arid. The Father Plant, a fine textured grass, was collected a world away in South Africa, also known for its cold, dry climate.