Trees & woodland lore · Western North Carolina field companion
River birch
Betula nigra
Whole tree — Betula nigra. Species reference; the photographed specimen does not confirm the named variety. Age, pruning, and site affect its shape.☀ Full sun · ◐ Part sun or part shadeMichael Rivera ↗ · CC BY-SA 4.0Photo contextResized and converted to WebP; full original composition retained.
Problems to recognize in WNC gardens. These are documented susceptibilities, not a local outbreak report or a diagnosis. Weather, elevation and growing conditions change the risk.
Diseases & similar-looking injury
Leaf spots and occasional cankers may occur. Heat and moisture stress can also thin the canopy.
Insects to recognize
Aphids, leafminers and birch skeletonizers may occur. River birch is resistant to bronze birch borer; do not assume all birches have the same risk.
When to look
Inspect leaves in spring and summer; look for mines within leaves and chewed tissue.
A useful first step
Check water availability and site suitability. Seek help for progressive branch death rather than treating every leaf blemish.
More growing details
Read the leaves
Look for a wedge-shaped leaf base and smaller teeth on the larger teeth. The underside is paler than the top.
Read the bark
Young to middle-aged bark peels in curling sheets; old trunks can become dark and rough.
Fruit & seed
Catkins produce small seeds in late spring; fallen catkins can help establish the genus.
Winter character
Peeling bark plus fine alternate twigs give a useful winter combination.
Origin & place
The species occurs naturally in the southern Appalachian region; a planted specimen is not evidence of wild local origin.
WNC Notes
A native birch that appreciates moisture. Mature size and bark appearance change with age and growing conditions.
Sun Exposure
Full sun–part shade
MATURE HEIGHT (FT)
30–70
MATURE WIDTH (FT)
40–60
BLOOM SEASON
Spring
BLOOM COLOR
Catkins
FALL / WINTER COLOR
Yellow
Wet-Soil Tolerance
Very high
Drought Tolerance
Low–moderate
At Lynn’s Nursery · Heritage
Betula nigra Summer/Fall 2026 catalog. Confirm current availability with the nursery. Mature height × width: 40–60 ft × 30–40 ft. Light: Full sun to part shade. Habit: Multi-stem, irregular shade tree. Flowers & season: Brown catkins; spring. Peeling bark; adaptable to moist soils.
LOOK CLOSELY
Two views, a closer look.
Place two photographs beside one another. Compare the overall plant with leaves, flowers, or bark when those views are available. Captions identify what each photograph actually shows. Images are not at the same scale; species references may show different cultivars.
Whole tree — Betula nigra. Species reference; the photographed specimen does not confirm the named variety. Age, pruning, and site affect its shape.☀ Full sun · ◐ Part sun or part shadeMichael Rivera ↗ · CC BY-SA 4.0Photo contextResized and converted to WebP; full original composition retained.Shoot with alternate, ovate, toothed leaves. Taxon reference; photograph alone does not establish a named cultivar.☀ Full sun · ◐ Part sun or part shadeKathleen Moore ↗ · CC BY 2.0Photo contextResized and converted to WebP; no diagnostic content altered.Close-up on gray, exfoliating bark — species reference; cultivar identity not inferred.☀ Full sun · ◐ Part sun or part shadeKathleen Moore ↗ · CC BY 2.0Photo contextResized and converted to WebP; full original composition retained.
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