How to identify a tree from bark alone

Bark is the one feature available year-round, on every part of the tree, from the ground. In winter, when leaves and fruits are gone and the canopy is bare, bark becomes the primary identification tool. Even in summer, learning bark means you can ID trees from a moving car or confirm a leaf-based.

Bark is the one feature available year-round, on every part of the tree, from the ground. In winter, when leaves and fruits are gone and the canopy is bare, bark becomes the primary identification tool. Even in summer, learning bark means you can ID trees from a moving car or confirm a leaf-based ID with a second field mark.

Bark is not as precise as a leaf — many species have broadly similar bark — but for the most common trees, distinctive bark narrows the field rapidly.

Bark that peels in layers

**Paper birch (Betula papyrifera):** White bark peeling in large, thin, papery sheets. Horizontal dark lenticels are the secondary feature. No other common hardwood has this combination. Per UMN Extension, peeling the bark damages the tree and should be avoided on living trees.

**River birch (Betula nigra):** Reddish-brown to tan bark peeling in tight, shaggy, curling strips. On young trees this is attractive; on old trees the bark darkens and furrows. The curling-strip pattern and reddish-brown color distinguish it from paper birch. Per NC State Extension, the 'Heritage' cultivar has lighter, more cream-colored bark.

**Shagbark hickory (Carya ovata):** Gray bark on mature trees peeling in long, slightly curved plates that lift away from the trunk at the ends — the shaggy look is dramatic and distinctive. Per Penn State Extension, no other common eastern hardwood develops this specific shaggy-plate pattern.

**Sycamore (Platanus occidentalis):** Upper branches and upper trunk shed plates of outer bark each year, revealing white, cream, and green inner bark in irregular mottled patches. Per Missouri Botanical Garden, the mottled, whitish upper trunk is visible from a great distance, especially in winter. Lower trunk develops blocky, brownish bark that does not peel.

**Lacebark elm (Ulmus parvifolia):** Mottled bark exfoliating in irregular patches to reveal gray, orange, tan, and green beneath — ornamentally valuable and diagnostic. Per NC State Extension, no other common landscape tree has this specific multicolored peeling pattern.

**Scotch pine (Pinus sylvestris):** Upper trunk and branches have distinctly orange-red to salmon-colored bark that peels in thin, papery flakes — visible from a distance. Lower trunk is grayish-brown and non-peeling.