Wool sower galls are created by a wasp, Callirhytis seminator. When they first develop, they are fuzzy, white to whitish-pink, round galls that resemble cotton balls.

The galls are filled with fibers and small seed-like capsules, which is why they are also known as oak seed galls. Each of these “seeds” contains a single wasp larva.

Galls can be on leaves, twigs, roots, or flowers and can take on various appearances. One of the more attractive galls you may encounter is wool sower galls. What are Wool Sower Galls? Wool sower ...

Wool sower galls are created by a wasp, Callirhytis seminator. When they first develop, they are fuzzy, white to whitish-pink, round galls that resemble cotton balls. The galls are filled with fibers ...