2006-07-18 16:10:21 · 7 answers · asked by clueless 1 in Home & Garden ➔ Garden & Landscape
Most likely you saw oak gall. This is caused by intrusions into the tree. There are also gall forming wasps. Google "oak gall" and go to the ento.psu site run by Penn State University.
2006-07-18 16:19:37 · answer #1 · answered by PAUL B 1 · 0⤊ 1⤋
Those balls are called galls and they are made by wasps and they like to make them in Oak trees. It could have been any of the Oak tree species.
2006-07-18 23:54:01 · answer #2 · answered by Goldenrain 6 · 0⤊ 0⤋
Galls on oak trees are caused by a tiny wasp. It is caused by a reaction between the hormones in the plant and chemicals produced by the insect. Crazy I know, but it is true! Many different oaks are affected by the wasp that causes these galls.
Here's a great paper from the University of Kentucky:
http://www.uky.edu/Ag/Entomology/entfacts/trees/ef408.htm
2006-07-19 09:14:36 · answer #3 · answered by plantmd 4 · 0⤊ 0⤋
oak tree with balls. ;)
2006-07-18 23:13:50 · answer #4 · answered by bugojanka69 3 · 0⤊ 0⤋
definitely oak gall
2006-07-19 02:30:09 · answer #5 · answered by Paul 2 · 0⤊ 0⤋
These are oak apples and contain a grub.
2006-07-19 06:25:51 · answer #6 · answered by Anonymous · 0⤊ 0⤋
male?
2006-07-18 23:35:58 · answer #7 · answered by Koko 3 · 0⤊ 0⤋