Grape jelly-like globs on fallen oak branches

Asked December 25, 2018, 10:08 PM EST

I have 2 big pin oak trees in my front yard. One has had many fallen branches recently and when I've picked them up I've noticed jelly-like globs on many branches. They are like purplish in color. Are they insect eggs? What should we do?
Thank you,
Amy

Lancaster County Pennsylvania

1 Response

This could be gall process. bring in a sample to the extension office when a master gardener can look at it to be sure.

Lancaster county extension Master Gardeners
1383 Arcadia Rd., Room 140
Lancaster, PA 17601
717 394-6851

Call ahead before you travel to make sure someone can meet with you.
Also see:


Thank you, G.