Oak, genus of about 450 species of trees and shrubs in the beech family (Fagaceae), distributed throughout the north temperate zone and at high altitudes in the tropics. Oak species are characterized by alternate, simple, deciduous or evergreen leaves with lobed, toothed, or entire margins.

Oaks appear so often in the story of humanity that it could scarcely have been written without them - literally. From as early as the 4th century, ink in much of the world was made from oak galls, or “oak apples”, formed when a wasp’s eggs are laid in oak leaves.

Almost a third of oak species are threatened with extinction due to climate change, invasive pests, and habitat loss. In culture, the oak tree is a symbol of strength and serves as the national tree of many countries. In Indo-European and related religions, the oak is associated with thunder gods.

Oak Harbor Freight Lines Inc (OHFL) is a highly respected leading west regional LTL carrier serving points throughout the States of Arizona, California, Idaho, Nevada, Oregon and Washington. With strategic partners Oak Harbor offers services throughout the United States and Canada for all your logistics and shipping needs.

In this guide, we’ll explore 58 common types of oak trees with detailed descriptions and identification tips. You’ll learn about their native regions, growth habits, leaf characteristics, and USDA hardiness zones.

From expert-reviewed publications and engaging videos to insightful webinars and podcasts, our oak resources cover everything from species identification and forest stewardship to wildlife habitat management and oak regeneration techniques.