When leaves turn an unnatural shade of yellow, they’re termed “chlorotic.” Because the most common cause of this yellowing is iron deficiency, the disorder is called iron chlorosis ...

If there’s not enough water to keep all the leaves happy, shed some and send their products to those that remain. The reason the leaves often turn yellow before they drop is that the tree ...

The leaves of 'Summer Red' start off burgundy red in spring and then turn yellow, orange, or purple before they drop. Expect this tree to reach 40 feet in height with a 25-foot spread.