Causes. The most common causes of megaloblastic anemia are deficiency of either cobalamin (vitamin B12) or folate (vitamin B9). These two vitamins serve as building blocks and are essential for the production of healthy cells such as the precursors to red blood cells.olate, which is also known as folic acid, is a B vitamin that is normally found in green leafy vegetables, citrus fruits, and certain grains and nuts. Folate deficiency can occur in diets that supply insufficient amounts of these foods.
While the Callery pear is popular for its attractive flowers, this tree puts on an autumn display of variegated foliage in red, purple, orange and yellow tones. The best time to prune your flowering pear is in late spring, once the flowers have passed for the year. credit: IT Stock Free/Polka Dot/Getty Images.
All plants have a time when they rest or go dormant. For deciduous trees, it is when they lose their leaves during the winter. Most evergreen plants, like citrus, also rest during the times of cooler temperatures, resuming growth and development when the temperatures begin to rise in the spring.The absolutely best time to do heavy pruning is during the coldest months.Should I prune my citrus trees this winter?â My immediate answer to that question is always: âWhy?â Unlike deciduous fruit trees such as peaches, apricots and apples, citrus do not need to be pruned each year. In fact, they do better without it.