Bitternut Hickory
Carya cordiformis
Bitternut hickory is a tall, fast-growing eastern North American hickory recognized by its bright sulfur-yellow winter buds. Its nuts are extremely bitter, but its dense wood is excellent for smoking and firewood.
- Light
- Full sun
- Water
- Moderate; tolerates moist soils
- Difficulty
- Moderate
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Overview
Bitternut hickory (Carya cordiformis) is a large deciduous tree in the walnut family and one of the most widespread hickories in eastern North America. It belongs to the "pecan hickory" group.
Its most reliable identifying feature is its bright sulfur-yellow buds, unmatched by any other native hickory. Unlike shagbark or pignut hickories, its nuts are intensely bitter and rarely eaten by people or even most wildlife.
The tree is valued for its strong, heavy wood, used for tool handles, smoking meats, and firewood.
How to identify it
- Buds: Distinctive bright yellow, scurfy terminal buds — the single best field mark.
- Leaves: Pinnately compound, 6–10 in long, usually with 7–11 (most often 9) slender, finely toothed leaflets.
- Bark: Gray, smooth when young, becoming shallowly furrowed with interlacing ridges (not shaggy).
- Fruit: Small, rounded nut about 1 in wide, with a thin husk that splits partway and prominent wing-like ridges along the sutures; kernel extremely bitter.
- Size & habit: 50–80 ft tall with a broad, rounded crown.
Care & growing
Bitternut hickory grows in full sun and tolerates a wide range of soils, including moist and periodically wet sites.
- Water: Prefers moist, fertile bottomland soils but adapts to drier uplands.
- Soil: Deep, rich loams are ideal; tolerates clay and moderately wet ground.
- Temperature: Hardy in USDA zones 4–9.
- Feeding: Generally unnecessary in native soils.
- Propagation: From stratified seed; like other hickories it forms a deep taproot, so transplant when young. Foliage and roots release juglone.
Habitat & origin
Native across eastern North America, from Quebec and Maine west to Minnesota and south to Texas and Florida — the broadest range of any true hickory.
It favors moist bottomlands, low woods, and stream terraces but also grows on drier slopes. It is a common component of mixed hardwood forests and is sometimes planted as a shade tree.
Uses & benefits
- Wood & fuel: Dense, high-heat wood makes premium firewood and excellent smoking wood for meats.
- Tools: Used historically for tool handles, ladder rungs, and other items needing strong, shock-resistant wood.
- Wildlife: Despite the bitter taste, some squirrels, rabbits, and ducks eat the nuts.
- Shade: Occasionally planted for its tall, clean form and golden fall color.
Frequently asked questions
Why is it called bitternut?
Its nut kernels are intensely bitter and unpalatable to humans, unlike the sweet nuts of shagbark or pignut hickory.
How can I tell bitternut hickory apart from other hickories?
Look for its bright sulfur-yellow buds, the most distinctive feature of any native hickory, plus its slender leaflets (usually 9) and non-shaggy bark.
Is bitternut hickory good firewood?
Yes. Like other hickories it burns hot and long, and it is also prized as a smoking wood for barbecue.
Can wildlife eat the bitter nuts?
Some animals, including squirrels and ducks, will eat them, but they are far less favored than sweeter hickory and oak nuts.
Bitternut Hickory guides
In-depth guides for identifying, growing, and caring for Bitternut Hickory.
Bitternut Hickory identified by the community
Real specimens identified with Plant Identifier.
