• Photo of Carya cordiformis (Carya cordiformiss)

Plant Profile: Carya cordiformis

Taxonomy: Carya cordiformis

Names

Bitter Hickory, Bitternut, Bitternut Hickory, Bitter Pecan, Pig Hickory, Red Hickory, Swamp Hickory, White Hickory

  • Photo of Carya cordiformis (Carya cordiformiss)

Phonetic Spelling:KAIR-yuh kord-ih-FOR-miss

Genus:Carya

Species:cordiformis

Family:Juglandaceae

Carya cordiformis, commonly known as Bitternut Hickory, is a tall and slender deciduous tree characterized by its cylindrical shape and broad, pyramid-like crown. This species is indigenous to North Carolina and typically thrives in moist, fertile soils found in open areas that receive ample sunlight. While the Bitternut Hickory is intolerant of shade, it can adapt to various soil types. Its robust taproot makes relocation challenging, and as the tree grows, it requires significant space, which is an important factor to consider when planting it in a permanent location. In densely wooded environments, the trunk tends to be long and straight, with a shorter crown, whereas in open spaces, the trunk is shorter, and the crown takes on a larger, ovoid form. Throughout the year, the Bitternut Hickory can be distinguished from other native trees by its distinctive long, scaly, yellow buds. In low-lying areas, it can reach heights of 50 to 70 feet or more, with a straight trunk measuring between 1 to 2.5 feet in diameter. The wood is dense, strong, and heavy, featuring a reddish-brown heartwood. This tree is late to leaf out in spring and sheds its leaves early in autumn; however, while its foliage is present, it provides a light shade that allows grass and other plants to flourish beneath it. Some individual trees have been known to live for up to 200 years, but they typically do not begin producing nuts until they are at least 30 years old.

**Diseases, Insects, and Other Plant Problems:**
There are no significant disease or insect issues associated with this tree. It is sensitive to shade, and while it may occasionally face challenges from pests such as the hickory bark beetle, pecan weevil, borers, and twig girdlers, these are not common. Additionally, it may experience occasional diseases like white heart rot, anthracnose, leaf blotch, powdery mildew, leaf spot, catkin blight, and crown gall.

Carya cordiformis Feature Summary

Carya cordiformis Image Gallery

Tags

#deciduous
#wildlife plant
#moths
#NC native
#nighttime garden
#pollinator plant
#Braham Arboretum
#larval host plant
#food source fall
#food source herbage
#coastal FAC
#bird friendly
#food source hard mast fruit
#mammals
#butterfly friendly
#moth larvae
#Piedmont Mountains FACU
#pollinator garden
#non-toxic for horses
#non-toxic for dogs
#non-toxic for cats
#audubon
#hickory horndevil moth

Similar Plants

Carya cordiformis is often confused with:

Carya cordiformis Feature Summary

Attributes
Said to be somewhat inferior to the other hickories, but is used for the same purposes: tool handles, furniture, interior paneling, and sporting goods. Also used to smoke ham and bacon.
Eastern Canada to Central & Eastern United States.
Northeast Canada west to Nebraska, south to Texas and east to Florida.
Several species of moth are attracted to the foliage. Larval host for butterflies and Luna moths. This plant supports Hickory Horndevil (Citheronia regalis) larvae which have one brood and appear from May to mid-September. Adult Hickory Horndevil moths do not feed.
Thin shelled nut, but bitter and astringent.
medium flammability
Fruit
Nuts do not appear until the tree is about 30 years old. The 4-ribbed nut is about an inch long, roughly spherical, with a thin shell. The meat of the nut is very bitter. The husk is four-winged from the tip to about the middle and is covered with yellowish-green, scruffy hairs. Nuts display in October.
Flowers
Monoecious with both male and female flowers produced on the same tree. The male flowers are arranged in greenish yellow catkins that are 3 to 5 inches long in clusters of 3, drooping downward from either the tips of the previous year's twigs or at the base of the current year's twigs. Each tiny male flower has a 3-lobed calyx and several stamens. The female flowers are small short spikes at the tips of the current year's twigs. Each female flower is about an 1/8 of an inch, consisting of an ovoid ovary with 4 prominent ridges and a pair of styles. The blooming period occurs from mid- to late spring for about 1 to 2 weeks.
Gold/Yellow
Green
Insignificant
Spike
Catkin
< 1 inch
Leaves
Leaves are 6 to 10 inches long with 7 to 9 long, oval, toothed leaflets that are dark yellow-green above and lighter below.
Green
Gold/Yellow
Compound (Pinnately , Bipinnately, Palmately)
Lanceolate
> 6 inches
Bark
The bark on the trunk is granite gray and faintly tinged with yellow. It is less rough that most of the hickories, yet it is broken into narrow, plate-like scales as it ages. The hard bark is initially smooth.
Light Gray
Smooth
Furrowed
Stem
Branches are gray and smooth, while twigs are gray or light brown. Young non-woody shoots are light green, terete, and glabrous; they have scattered lenticels that are white or pale yellow.
Gray/Silver
Smooth (glabrous)
Straight
Conspicuous
Whole Plant Traits
Tree
Native Plant
Rounded
Pyramidal
Oval
Irregular
Ascending
Coarse
Cultural Conditions
Full sun (6 or more hours of direct sunlight a day)
Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Neutral (6.0-8.0)
Good Drainage
Moist
Occasionally Wet
Coastal
Mountains
Piedmont
4a
4b
5b
5a
6a
6b
7a
7b
8b
8a
9a
9b
Clay
High Organic Matter
Loam (Silt)
Sand
Shallow Rocky
Landscape
Butterfly Garden
Pollinator Garden
Nighttime Garden
Shade Tree
Street Tree
Butterflies
Pollinators
Songbirds
Moths
Small Mammals

Carya cordiformis Attributes

Carya cordiformis: Uses (Ethnobotany)

Said to be somewhat inferior to the other hickories, but is used for the same purposes: tool handles, furniture, interior paneling, and sporting goods. Also used to smoke ham and bacon.

Carya cordiformis: Country Or Region Of Origin

Eastern Canada to Central & Eastern United States.

Carya cordiformis: Distribution

Northeast Canada west to Nebraska, south to Texas and east to Florida.

Carya cordiformis: Wildlife Value

Several species of moth are attracted to the foliage. Larval host for butterflies and Luna moths. This plant supports Hickory Horndevil (Citheronia regalis) larvae which have one brood and appear from May to mid-September. Adult Hickory Horndevil moths do not feed.

Carya cordiformis: Edibility

Thin shelled nut, but bitter and astringent.

Carya cordiformis: Life Cycle

Annual
Biennial
Bulb
Perennial
Woody

Carya cordiformis: Recommended Propagation Strategy

Division
Grafting
Layering
Leaf Cutting
Root Cutting
Seed
Stem Cutting

Carya cordiformis: Fire Risk Rating

extreme flammability
high flammability
low flammability
medium flammability

Carya cordiformis Fruit

Carya cordiformis: Fruit Description

Nuts do not appear until the tree is about 30 years old. The 4-ribbed nut is about an inch long, roughly spherical, with a thin shell. The meat of the nut is very bitter. The husk is four-winged from the tip to about the middle and is covered with yellowish-green, scruffy hairs. Nuts display in October.

Carya cordiformis: Fruit Type

Achene
Aggregate
Berry
Capsule
Caryopsis
Drupe
Follicle
Legume
Nut
Pome
Samara
Schizocarp
Siliqua

Carya cordiformis: Fruit Value To Gardener

Edible
Fragrant
Good Cut
Good Dried
Long Bloom Season
Long-lasting
Showy

Carya cordiformis: Display/Harvest Time

Fall
Spring
Summer
Winter

Carya cordiformis: Fruit Length

< 1 inch
1-3 inches
> 3 inches

Carya cordiformis Flowers

Carya cordiformis: Flower Description

Monoecious with both male and female flowers produced on the same tree. The male flowers are arranged in greenish yellow catkins that are 3 to 5 inches long in clusters of 3, drooping downward from either the tips of the previous year's twigs or at the base of the current year's twigs. Each tiny male flower has a 3-lobed calyx and several stamens. The female flowers are small short spikes at the tips of the current year's twigs. Each female flower is about an 1/8 of an inch, consisting of an ovoid ovary with 4 prominent ridges and a pair of styles. The blooming period occurs from mid- to late spring for about 1 to 2 weeks.

Carya cordiformis: Flower Color

filter_vintage
Gold/Yellow
filter_vintage
Green

Carya cordiformis: Flower Inflorescence

Catkin
Corymb
Cyme
Head
Insignificant
Panicle
Raceme
Solitary
Spadix
Spike
Umbel

Carya cordiformis: Flower Bloom Time

Winter
Spring
Summer
Fall

Carya cordiformis: Flower Size

1-3 inches
3-6 inches
< 1 inch
> 6 inches

Carya cordiformis Leaves

Carya cordiformis: Leaf Description

Leaves are 6 to 10 inches long with 7 to 9 long, oval, toothed leaflets that are dark yellow-green above and lighter below.

Carya cordiformis: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Carya cordiformis: Leaf Color

spa
Gold/Yellow
spa
Green

Carya cordiformis: Deciduous Leaf Fall Color

spa
Gold/Yellow

Carya cordiformis: Leaf Type

Compound (Pinnately , Bipinnately, Palmately)
Fronds
Needles
Sheath
Simple

Carya cordiformis: Leaf Arrangement

Alternate
Opposite
Other/more complex
Rosulate
Whorled

Carya cordiformis: Leaf Shape

Acicular
Auriculate
Cordate
Cuneate
Deltoid
Elliptical
Filiform
Lanceolate
Linear
Oblanceolate
Oblong
Obovate
Obtuse
Orbicular
Ovate
Palmasect
Palmatifid
Peltate
Pinnatifid
Pinnatisect
Reniform
Rhomboidal
Spatulate
Subcordate
Subulate

Carya cordiformis: Leaf Margin

Crenate
Crenulate
Dentate
Denticulate
Doubly Crenate
Doubly Dentate
Doubly Serrate
Entire
Lobed
Serrate
Sinuate
Undulate

Carya cordiformis: Hairs Present

No
Yes

Carya cordiformis: Leaf Length

< 1 inch
1-3 inches
3-6 inches
> 6 inches

Carya cordiformis: Leaf Value To Gardener

Edible
Fragrant
Good Cut
Good Dried
Long-lasting
Showy

Carya cordiformis Bark

Carya cordiformis: Bark Description

The bark on the trunk is granite gray and faintly tinged with yellow. It is less rough that most of the hickories, yet it is broken into narrow, plate-like scales as it ages. The hard bark is initially smooth.

Carya cordiformis: Bark Color

grass
Light Gray

Carya cordiformis: Surface/Attachment

Bumpy
Exfoliating
Fissured
Furrowed
Lenticels
Papery
Patchy
Peeling
Ridges
Scaly
Shaggy
Shiny
Shredding
Smooth
Spongy

Carya cordiformis Stem

Carya cordiformis: Stem Description

Branches are gray and smooth, while twigs are gray or light brown. Young non-woody shoots are light green, terete, and glabrous; they have scattered lenticels that are white or pale yellow.

Carya cordiformis: Stem Color

grass
Gray/Silver

Carya cordiformis: Stem Is Aromatic

No
Yes

Carya cordiformis: Stem Surface

Corky Ridges
Covered with a powdery bloom (glaucous)
Dull
Hairy (pubescent)
Polished
Smooth (glabrous)

Carya cordiformis: Stem Form

Straight
Zig Zags

Carya cordiformis: Stem Lenticels

Conspicuous
Not Conspicuous

Carya cordiformis Whole Plant Traits

Carya cordiformis: Plant Type

Annual
Bulb
Carnivorous
Edible
Epiphyte
Fern
Ground Cover
Herb
Herbaceous Perennial
Houseplant
Mushroom
Native Plant
Ornamental Grasses and Sedges
Perennial
Poisonous
Rose
Shrub
Succulent
Tree
Turfgrass
Vegetable
Vine
Water Plant
Weed
Wildflower

Carya cordiformis: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Carya cordiformis: Habit/Form

Arching
Ascending
Broad
Cascading
Climbing
Clumping
Columnar
Conical
Creeping
Dense
Erect
Horizontal
Irregular
Mounding
Multi-stemmed
Multi-trunked
Open
Oval
Prostrate
Pyramidal
Rounded
Spreading
Vase
Weeping

Carya cordiformis: Growth Rate

Slow
Medium
Rapid

Carya cordiformis: Maintenance

Low
Medium
High

Carya cordiformis: Texture

Fine
Medium
Coarse

Carya cordiformis Cultural Conditions

Carya cordiformis: Light

Dappled Sunlight (Shade through upper canopy all day)
Deep shade (Less than 2 hours to no direct sunlight)
Full sun (6 or more hours of direct sunlight a day)
Partial Shade (Direct sunlight only part of the day, 2-6 hours)

Carya cordiformis: Soil pH

Acid (<6.0)
Alkaline (>8.0)
Neutral (6.0-8.0)

Carya cordiformis: Soil Drainage

Frequent Standing Water
Good Drainage
Moist
Occasional Flooding
Occasionally Dry
Occasionally Wet
Very Dry

Carya cordiformis: NC Region

Coastal
Mountains
Piedmont

Carya cordiformis: USDA Plant Hardiness Zone

thermostat
4a
thermostat
4b
thermostat
5a
thermostat
5b
thermostat
6a
thermostat
6b
thermostat
7a
thermostat
7b
thermostat
8a
thermostat
8b
thermostat
9a
thermostat
9b

Carya cordiformis: Soil Texture

Clay
High Organic Matter
Loam (Silt)
Sand
Shallow Rocky

Carya cordiformis Landscape

Carya cordiformis: Landscape Theme

Asian Garden
Butterfly Garden
Children's Garden
Cottage Garden
Cutting Garden
Drought Tolerant Garden
Edible Garden
English Garden
Fairy Garden
Garden for the Blind
Native Garden
Nighttime Garden
Pollinator Garden
Rain Garden
Rock Garden
Shade Garden
Water Garden
Winter Garden

Carya cordiformis: Design Feature

Accent
Barrier
Border
Flowering Tree
Foundation Planting
Hedge
Mass Planting
Screen/Privacy
Security
Shade Tree
Small groups
Small Tree
Specimen
Street Tree
Understory Tree

Carya cordiformis: Resistance To Challenges

Black Walnut
Compaction
Deer
Diseases
Drought
Dry Soil
Erosion
Fire
Foot Traffic
Heat
Heavy Shade
Humidity
Insect Pests
Pollution
Poor Soil
Rabbits
Salt
Slugs
Squirrels
Storm damage
Urban Conditions
Voles
Wet Soil
Wind

Carya cordiformis: Landscape Location

Coastal
Container
Hanging Baskets
Houseplants
Lawn
Meadow
Naturalized Area
Near Septic
Patio
Pond
Pool/Hardscape
Recreational Play Area
Riparian
Rock Wall
Slope/Bank
Small Space
Vertical Spaces
Walkways
Woodland

Carya cordiformis: Attracts

Bats
Bees
Butterflies
Frogs
Hummingbirds
Moths
Pollinators
Predatory Insects
Reptiles
Small Mammals
Songbirds
Specialized Bees