Focusing primarily on both the understanding of our natural and man-made environments, environmental science degrees draw from diverse fields of studies and require a strong background in the more traditional sciences: biology, physics, chemistry, geography, ecology, and even biotechnology.
When and how to pinch back mums. If you decide to prune your mums, you can start pinching stems in spring when the plants have reached a height of about 6 inches. To pinch them back, simply grab a stem between your thumb and index finger about 2 to 3 inches above the base of the plant and just above a leaf and pinch it off.
The next step in winter care for mums is to properly insulate them in the fall. The leaves of the plant will die back and become brown after a few hard frosts have hit your area. After the foliage of the plant has died back, you will need to cut it back.Cut back the stems of the mums to 3 to 4 inches above the ground.he next step in winter care for mums is to properly insulate them in the fall. The leaves of the plant will die back and become brown after a few hard frosts have hit your area. After the foliage of the plant has died back, you will need to cut it back.