Q. We have a pin oak tree that is approximately 30 feet tall. On the north-facing side of the tree there are many wilted leaves, and there are many balls of strange growth. Pictures of the leaves and ...

So said the eminent Harvard botanist Asa Gray, on page 451 in his encyclopedic “Lessons in Botany and Vegetable Physiology,” a book published in 1872. I got my copy at an old bookstore several years ...

HOUSTON, Texas (KTRK) -- Oak galls are popping up everywhere this fall! 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 ...