What is an Oak Apple? : Sycamore Land Trust
August | 2014 | The Granada Native Garden Newsletter
Oak trees have a lot of gall - 'oak apple gall,' that is
Those weird balls on your oak tree are from gall wasps
Home, Yard & Garden Newsletter at the University of Illinois
Brown balls on oak trees aren't harmful | San Luis Obispo Tribune
What is growing on that oak tree?
The Magic of Oak Galls — honey folk clothing
🔥 You know those brown balls that grow on oak trees? They're called galls, and can occasionally be pink and translucent. : r/NatureIsFuckingLit
Oak Gall Wasp | From the Ground Up - YouTube
Oak Galls and Mistletoe: Nature's Decorations - The Real Dirt Blog - ANR Blogs
The Cool and Unusual — San Diego Canyonlands
Oak Galls: What Are Oak Galls | Davey Tree
Nature: Sonoma County is bursting with galls
Galls on Oak Leaves and Twigs | Horticulture and Home Pest News
How Wasps Make Beautiful and Complex “Oak Apples” | Brandywine Conservancy and Museum of Art
Oak apple - Wikipedia
Quick Tip: What are those Round Growths on my Live Oak tree? | The Masters Lawn Care
Are your oak trees infected with oak gall? - American Tree Experts
Oak tree 'galls' are fairly harmless
What Are Oak Galls - Learn About Oak Apple Gall Treatment | Gardening Know How
Oak Galls: What Are Oak Galls | Davey Tree
