1 Ashland was ranked the top private college for teacher education in the state of Ohio by Online Education Database in 2012. 2  Educate to Career ranked Ashland a Top Best Value College in 2014.  U.S. News and World Report listed Ashland among the top 200 national colleges and universities in 2012 and 2013.
Autumn Foliage Color. The Process of Leaf Color Change. Leaves change color during the autumn because the amounts of pigments change as the leaves prepare to fall from the trees. All leaves gradually lose chlorophyll during the growing season, and this loss accelerates before leaf fall.
Here are the most common reasons for yellowing leaves: 1  Normal aging. 2  As many plants age, the lower leaves will turn yellow and drop off as a normal part of growth.3  This is especially true of foliage plants like dieffenbachia and dracaena. 4  In this case, don't worry.ellowing leaves can be caused by a number of conditions. If the cause is obvious, you can fix it immediately. If the cause isn't so obvious, try changing one thing at a time until you fix it. Even after you correct the problem, however, it's likely that yellow leaves will fall off with time.