Plow and Hose: What falls in fall? Posted in: Lifestyle Central Texas may not be known for showy fall foliage, but thanks to the recent cold fronts, it won’t be long before the leaves start to fade and begin to drop.Deciduous trees reduce chlorophyll production in leaves when temperatures drop to 45 degrees. Chlorophyll is the dark green pigment that is responsible for photosynthesis, which uses sunlight to make food for the tree. When the dark pigments fade, other pigments in the leaves like orange, yellow and red are able to show.After they have taken in all the nutrients, they can form their leaves. Trees drop their leaves and begin winter dormancy. When left on ...PLEASE LOG IN FOR PREMIUM CONTENT. Our website requires visitors to log in to view the best local news. Not yet a subscriber? Subscribe today!