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.
If you're planting a mum plant, the pot should be twice as big as the rootball. Add enough soil to make a layer about 1 inch (2.5 cm) deep in the bottom of the pot. If you use any more than that, the plant will sit on top of the soil and be taller than the pot.