Mammoth™ Daisies are exceptional garden mums, developed by the University of Minnesota for vigor and hardiness. Once established, they will grow to 3 feet tall, mounding to 4 feet across. Extra hardy compared to the common pot mums, plants overwinter dependably to Zone 3, and flower well in the south. With remarkably dense, tight habit, each plant gets covered with hundreds of colorful daisies. Does not need pruning, pinching or deadheading. Container size: 4"