Oak galls are popping up everywhere this fall! They're the tiny, fuzzy yellow or brown balls on oak leaves and branches. You ...

“And hopefully (the tree) will have long acorns. And, usually you only see those big oak galls, the oak apples, on the valley oaks. Though not always.” A California Black Oak leaf. (Justine ...

Oaks are more likely to be struck by lightning than other trees ... oak gall ink. It was the standard writing and drawing ink in Europe from the end of the Roman period to the 19th Century. The ...