Nature: Sonoma County is bursting with galls
What's wrong with my plant? : Garden : University of Minnesota Extension
Those weird balls on your oak tree are from gall wasps
What are These Strange Orbs on My Oak Trees? - Gill Garden Center + Landscape Co.
Balls on oak tree - Ask Extension
What Are Oak Galls - Learn About Oak Apple Gall Treatment | Gardening Know How
Growths on Oak Leaves and Twigs :: Melinda Myers
Odd fruit in trees are wasp larvae, Connecticut experts say | Miami Herald
How Wasps Make Beautiful and Complex “Oak Apples” | Brandywine Conservancy and Museum of Art
My tiny oak tree is growing weird balls that aren't acorns | Nature and Garden Forum
Oak Galls and Mistletoe: Nature's Decorations - The Real Dirt Blog - ANR Blogs
Galls on Oak Leaves and Twigs | Horticulture and Home Pest News
The Cool and Unusual — San Diego Canyonlands
What is growing on that oak tree?
Oak tree 'galls' are fairly harmless
Master Gardener: Mites and insects cause most galls on trees and plants
What Are Oak “Apples”? | The Granada Native Garden Newsletter
How Wasps Make Beautiful and Complex “Oak Apples” | Brandywine Conservancy and Museum of Art
What Are Oak “Apples”? | The Granada Native Garden Newsletter
What's wrong with the acorns? | Nature Watch
Ball-shaped growth on oak - pennlive.com
The gall of that oak tree! | Opening the door, walking outside
You'll Never Guess What's Inside These Cute Little Oak Tree Balls
What is an Oak Apple? : Sycamore Land Trust
Oak Galls - Tree Top Nursery & Landscape Inc.
Oak Galls
The Magic of Oak Galls — honey folk clothing
