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.
pinch. 1. to squeeze or compress between the finger and thumb, the jaws of an instrument, or the like. 2. to constrict or squeeze painfully, as a tight shoe does. 3. to render unnaturally constricted or drawn: a face pinched with fear. 4. to remove or shorten (buds or shoots) in order to produce a certain plant shape or to encourage growth. 5. to affect with sharp discomfort or distress, as cold, hunger, or need does.