How to Identify Oak Trees by Bark

Written by cat mccabe
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How to Identify Oak Trees by Bark
Learn to recognise an oak variety by its bark (oak bark"s texture vertically. image by Solodovnikova Elena from

There are more than 400 species of oak in the world, and more than 80 in North America, where it is one of the mainstays of American hardwood forests. Since pioneer days, oaks have provided food, dyes and timber in vast quantities. Though it's easier to identify species of oak from the shape of leaves, you can also identify them from the colour and texture of their bark, which varies widely from one species to another.

Skill level:
Moderately Easy

Things you need

  • Guide to oak species
  • Computer with Internet connection
  • Digital camera
  • Pencil
  • Pad of paper

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  1. 1

    Start your identification project in the fall by learning the basic shapes of the oak leaf and its seed, the acorn. Most oak leaves have deeply serrated edges, and acorns are small, brown and capped. Zero in on the bark when you're fairly certain you're looking at an oak tree, and not some other species.

    How to Identify Oak Trees by Bark
    Most, but not all, oak leaves have deeply serrated edges (Green oak leaf and acorns image by Jim Mills from
  2. 2

    Snap a picture of the bark when you come upon an oak tree. Note the colour and texture of the bark. For example, a mature black oak has deep ridges in bark that is nearly black. A live oak has smoother bark that's brown with a touch of red. Jot down notes on colour, texture and the shape of the tree's limbs.

    How to Identify Oak Trees by Bark
    White oak has lightly ridged, greyish bark (oak tree image by PinkSkyPhotos from
  3. 3

    Go to your local library and ask for a book on oak tree varieties. Compare your picture to the photos or illustrations until you find a match. Search by the climate and growing conditions in your area to narrow the possibilities. For example, don't bother researching live oaks if you live in a northern climate.

    How to Identify Oak Trees by Bark
    Live oak has brown bark with a touch of red (oak texture 4 image by Darko Veselinovic from
  4. 4

    Create a database by uploading bark pictures into the software program of your choice, and adding notes. You'll quickly learn to identify oak trees by their bark, in summer or winter.

    How to Identify Oak Trees by Bark
    Laurel oak has irregular, flat, rough-edged ridges (Spanish Live Oak Bark image by Jorge Moro from

Tips and warnings

  • Oak tree bark identification can be a fun project to work on with a child, and teaches good basic research skills.

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