Galls on Oak Leaves and Twigs | Horticulture and Home Pest News
Oak Galls: What Are Oak Galls | Davey Tree
What is growing on that oak tree?
What Are Oak Apple Galls? | Gardening Question - New England
Quick Tip: What are those Round Growths on my Live Oak tree? | The Masters Lawn Care
What Are Oak “Apples”? | The Granada Native Garden Newsletter
How Wasps Make Beautiful and Complex “Oak Apples” | Brandywine Conservancy and Museum of Art
Nature: Sonoma County is bursting with galls
What's wrong with the acorns? | Nature Watch
Those weird balls on your oak tree are from gall wasps
What Are Oak “Apples”? | The Granada Native Garden Newsletter
The Cool and Unusual — San Diego Canyonlands
My tiny oak tree is growing weird balls that aren't acorns | Nature and Garden Forum
How Wasps Make Beautiful and Complex “Oak Apples” | Brandywine Conservancy and Museum of Art
Odd fruit in trees are wasp larvae, Connecticut experts say | Miami Herald
The Magic of Oak Galls — honey folk clothing
You'll Never Guess What's Inside These Cute Little Oak Tree Balls
What are These Strange Orbs on My Oak Trees? - Gill Garden Center + Landscape Co.
Oak Galls - Tree Top Nursery & Landscape Inc.
Oak tree 'galls' are fairly harmless
Balls on oak tree - Ask Extension
Oak trees have a lot of gall - 'oak apple gall,' that is
Oak Galls
What is an Oak Apple? : Sycamore Land Trust
What's wrong with my plant? : Garden : University of Minnesota Extension
Blame Wasps And Squirrels For All The Oak Leaves On Your Lawn | STLPR
Brown balls on oak trees aren't harmful | San Luis Obispo Tribune
