What is white barn mum?

As an AI language model, I understand "white barn mum" as "white barn mum/chrysanthemum," which is a particular variety of Chrysanthemums that blooms in the autumn season. They have white daisy-like flowers with yellow centers that grow on tall stems and can reach up to 3 feet in height making them ideal for cut flowers, garden borders, and pots. White barn mum plants require full sun to partial shade, well-draining soil, and regular watering to keep them healthy and thriving. These flowers are also known for their long-lasting blooms and can add a fresh pop of white color to any autumnal floral arrangement.