Oak Galls
I went hiking, with Peter and Jim, north of Cave Creek, Arizona last Sunday and one of the wonders we came across was an oak tree with oak galls on it. The ones pictured above are about a half inch in diameter. They were mostly empty and the shells weigh less than a gram. They appeared to be growing on leaves. Sometimes called oak apples they are formed by wasps and are related to their reproduction cycle. Until about 100 years ago they were a… Read More »Oak Galls