Why is Pink Muhly Grass (Muhlenbergia capillaris) perfect for Ozarks gardens and landscapes? It grows in a clump of very fine-textured, glossy green foliage to as tall as 4 feet and stands up to winter cold, torrid heat, and high humidity. Fun Facts: the name "Muhly" is short for Muhlenbergia, and other common names include Pink Hair Grass and Mule Grass. To see it in all its fall and early-winter glory, see below.