But if the leaves start to turn yellow during the tree's normal growth seasons, this is cause for concern. There has been a noticeable death and decline of mature oak trees in the United States ...

Black oak is also known as yellow oak, quercitron ... The difference is that red oak trees have more severely lobed leaves and larger acorns. Plus, the inner bark is reddish rather than black ...

Q: The leaves on my Diamond Spire gardenias are turning bright yellow before they turn brown and drop off. Another one 6 feet ...

Rose says bacterial leaf scorch also can cause leaves to turn brown from the margins inward, but “there is usually a yellow ... tree death – somewhat akin to clogging of the arteries in a ...

In autumn, they fade to the colors on the common fall spectrum: yellow, bronze ... might be mistaken for a willow oak tree because of its similarly shaped leaves; both are red oak varieties.

It attacks and kills the leaves and small twigs ... Q: We have two pin oak trees, and one side of one tree turns yellow each summer. Why? A: You are very lucky that both trees do not turn ...

Galls on oak leaves are harmless growths caused by specific insects. They have different shapes depending on the insect species causing the gall.

They're the tiny, fuzzy yellow or brown balls on oak leaves and branches. You could spot one or two, then dozens around the same tree. Oak galls are the result of gall wasps. Inside the galls are ...