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.
Start your mum seeds indoors at least 6 weeks before the last frost. 2. Use potting soil or mix 4 parts of peat moss, 2 parts of perlite and 2 parts of vermiculite. Either soil type will work; the important thing to remember is that the soil mixture you use should be well-draining.