Unusual color on Oak Tree branch or trunk : UMN Extension

Good news, bad news for fall: Maples should be healthy, oaks maybe not - Alexandria Echo Press

Galls: What are they? 4 Seasons Arborscapes

Why Do Trees Die

019: Apiosporina morbosa, Black Knot – Fungus Fact Friday

Non harmful tree conditions

Unusual color on Oak Tree branch or trunk : UMN Extension

9 Oak Tree Diseases Identification and Treatment

Not likin' those lichen on trees? Don't worry, they're harmless.

Crypsis by background matching and disruptive coloration as drivers of substrate occupation in sympatric ian bark praying mantises

Complete Guide to Pin Oak Trees, Quercus palustris – GrowIt BuildIT