Plant Profile: Quercus oglethorpensis

Taxonomy: Quercus oglethorpensis

Names

Oaks, Oglethorpensis Oak

  • Photo of Quercus oglethorpensis (Quercus oglethorpensiss)

Phonetic Spelling:KWER-kus oh-gle-thorp-EN-sis

Genus:Quercus

Species:oglethorpensis

Family:Fagaceae

The 'Oglethorpensis' Oak was identified for the first time in 1940 in Oglethorpe County, Georgia. This tree species, which is native to the southeastern United States, is currently classified as endangered due to threats from changes in land use, competition from other species, and the chestnut blight disease caused by Cryphonectria parasitica. Efforts to conserve this tree are actively being pursued by organizations such as the Morton Arboretum, along with several other arboretums that have taken steps to cultivate it.

This oak typically grows to a medium or large size, featuring a crown that starts off pyramidal or oval but becomes more rounded as it matures. Its lower branches tend to droop, and the crown is often filled with numerous sprouts and a dense array of twigs. The leaves resemble those of the Willow Oak, changing to a reddish-brown hue in the fall and remaining on the tree into the winter months. This species thrives in moist clay soils found in the piedmont region of the southeastern United States.

Quercus oglethorpensis Feature Summary

Quercus oglethorpensis Image Gallery

Tags

#deciduous
#fall color
#shade tree
#full sun tolerant
#wildlife plant
#native tree
#moths
#endangered
#deer resistant
#nighttime garden
#large spaces
#oak
#larval host plant
#clay soils tolerant
#butterfly friendly
#moth larvae
#pollinator garden
#problem for horses
#banded hairstreak butterfly
#gray hairstreak butterfly
#imperial moth
#juvenal’s duskywing butterfly
#edward’s hairstreak butterfly
#white-m hairstreak butterfly
#horace’s duskywing butterfly

Similar Plants

Quercus oglethorpensis Feature Summary

Attributes
Alabama, NE. Georgia, W. South Carolina, Louisiana, Mississippi
GA , LA , MS , SC
Mildly resistant to deer damage. Birds and mammals eat the acorns. Oak trees support a wide variety of Lepidopteran. You may see Imperial Moth (Eacles imperialis) larvae which have one brood per season and appear from April-October in the south. Adult Imperial Moths do not feed. Banded Hairstreak (Satyrium calanus), which have one flight from June-August everywhere but Florida where they emerge April-May. Edward's Hairstreak (Satyrium edwardsii), has one flight from May-July in the south and June-July in the north. Gray Hairstreak (Strymon melinus), has three to four flights in the south from February-November and two flights in the north from May-September. White-M Hairstreak (Parrhasius m-album) has three broods in the north from February-October. Horace’s Duskywing (Erynnis horatius) has three broods in Texas and the deep south from January-November, and two broods in the north from April-September. Juvenal’s Duskywing (Erynnis juvenalis) has one brood from April-June, appearing as early as January in Florida.
Acorns (nuts) are edible after tannins are leached or boiled out.
Perennial
Woody
Wildlife Food Source
Fruit
0.5 in. dark brown acorn enclosed 1/3 by a cup which is top-shaped, with appressed scales. They mature in 1 year;
Brown/Copper
< 1 inch
Flowers
Male and female flowers grow on the same tree. Male flowers are borne on hanging slender catkins and females are borne on short spikes.
Brown/Copper
Insignificant
Catkin
Leaves
Dark green leaves which are hairless above and light green beneath with yellowish pubescence. Leaves persist into winter. They are 2-5 inch long and 1/2 - 2 inches wide. Margins are smooth to wavy.
Brown/Copper
Red/Burgundy
Elliptical
Oblanceolate
Entire
Sinuate
3-6 inches
Leathery
1-3 inches
Bark
The bark is gray-brown, tight and quite hard, with broad, irregular ridges and very shallow furrows.
Light Gray
Light Brown
Stem
Young twigs are reddish-brown and hairless. On older twigs and branches grayish.
Brown/Copper
Red/Burgundy
Gray/Silver
Poisonous to Humans
Stomach pain, constipation and later bloody diarrhea, excessive thirst and urination if young leaves or raw acorns eaten.
Gallotannins, quercitrin, and quercitin.
Leaves
Fruits
Whole Plant Traits
Tree
Poisonous
Rounded
Pyramidal
Oval
Cultural Conditions
Full sun (6 or more hours of direct sunlight a day)
Good Drainage
Occasionally Wet
Piedmont
Clay
Loam (Silt)
Landscape
Butterfly Garden
Pollinator Garden
Nighttime Garden
Native Garden
Shade Tree
Lawn
Meadow
Naturalized Area
Butterflies
Pollinators
Moths
Problem for Horses

Quercus oglethorpensis Attributes

Quercus oglethorpensis: Country Or Region Of Origin

Alabama, NE. Georgia, W. South Carolina, Louisiana, Mississippi

Quercus oglethorpensis: Distribution

GA , LA , MS , SC

Quercus oglethorpensis: Wildlife Value

Mildly resistant to deer damage. Birds and mammals eat the acorns. Oak trees support a wide variety of Lepidopteran. You may see Imperial Moth (Eacles imperialis) larvae which have one brood per season and appear from April-October in the south. Adult Imperial Moths do not feed. Banded Hairstreak (Satyrium calanus), which have one flight from June-August everywhere but Florida where they emerge April-May. Edward's Hairstreak (Satyrium edwardsii), has one flight from May-July in the south and June-July in the north. Gray Hairstreak (Strymon melinus), has three to four flights in the south from February-November and two flights in the north from May-September. White-M Hairstreak (Parrhasius m-album) has three broods in the north from February-October. Horace’s Duskywing (Erynnis horatius) has three broods in Texas and the deep south from January-November, and two broods in the north from April-September. Juvenal’s Duskywing (Erynnis juvenalis) has one brood from April-June, appearing as early as January in Florida.

Quercus oglethorpensis: Edibility

Acorns (nuts) are edible after tannins are leached or boiled out.

Quercus oglethorpensis: Life Cycle

Annual
Biennial
Bulb
Perennial
Woody

Quercus oglethorpensis: Recommended Propagation Strategy

Division
Grafting
Layering
Leaf Cutting
Root Cutting
Seed
Stem Cutting

Quercus oglethorpensis: Play Value

Attractive Flowers
Attracts Pollinators
Buffer
Colorful
Defines Paths
Easy to Grow
Edible fruit
Fragrance
Pieces Used in Games
Screening
Shade
Sound
Textural
Wildlife Cover/Habitat
Wildlife Food Source
Wildlife Larval Host
Wildlife Nesting
Wind Break
Wind Shimmer

Quercus oglethorpensis Fruit

Quercus oglethorpensis: Fruit Description

0.5 in. dark brown acorn enclosed 1/3 by a cup which is top-shaped, with appressed scales. They mature in 1 year;

Quercus oglethorpensis: Fruit Type

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

Quercus oglethorpensis: Fruit Color

grass
Brown/Copper

Quercus oglethorpensis: Display/Harvest Time

Fall
Spring
Summer
Winter

Quercus oglethorpensis: Fruit Length

< 1 inch
1-3 inches
> 3 inches

Quercus oglethorpensis: Fruit Width

< 1 inch
1-3 inches
> 3 inches

Quercus oglethorpensis Flowers

Quercus oglethorpensis: Flower Description

Male and female flowers grow on the same tree. Male flowers are borne on hanging slender catkins and females are borne on short spikes.

Quercus oglethorpensis: Flower Color

filter_vintage
Brown/Copper

Quercus oglethorpensis: Flower Inflorescence

Catkin
Corymb
Cyme
Head
Insignificant
Panicle
Raceme
Solitary
Spadix
Spike
Umbel

Quercus oglethorpensis: Flower Bloom Time

Winter
Spring
Summer
Fall

Quercus oglethorpensis Leaves

Quercus oglethorpensis: Leaf Description

Dark green leaves which are hairless above and light green beneath with yellowish pubescence. Leaves persist into winter. They are 2-5 inch long and 1/2 - 2 inches wide. Margins are smooth to wavy.

Quercus oglethorpensis: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Quercus oglethorpensis: Leaf Color

spa
Green

Quercus oglethorpensis: Deciduous Leaf Fall Color

spa
Brown/Copper
spa
Red/Burgundy

Quercus oglethorpensis: Leaf Type

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

Quercus oglethorpensis: Leaf Arrangement

Alternate
Opposite
Other/more complex
Rosulate
Whorled

Quercus oglethorpensis: 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

Quercus oglethorpensis: Leaf Margin

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

Quercus oglethorpensis: Hairs Present

No
Yes

Quercus oglethorpensis: Leaf Length

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

Quercus oglethorpensis: Leaf Feel

Fleshy
Glossy
Leathery
Papery
Prickly
Rough
Rubbery
Slippery
Smooth
Soft
Velvety
Waxy

Quercus oglethorpensis: Leaf Width

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

Quercus oglethorpensis Bark

Quercus oglethorpensis: Bark Description

The bark is gray-brown, tight and quite hard, with broad, irregular ridges and very shallow furrows.

Quercus oglethorpensis: Bark Color

grass
Light Brown
grass
Light Gray

Quercus oglethorpensis: Surface/Attachment

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

Quercus oglethorpensis Stem

Quercus oglethorpensis: Stem Description

Young twigs are reddish-brown and hairless. On older twigs and branches grayish.

Quercus oglethorpensis: Stem Color

grass
Brown/Copper
grass
Gray/Silver
grass
Red/Burgundy

Quercus oglethorpensis: Stem Is Aromatic

No
Yes

Quercus oglethorpensis Poisonous to Humans

Quercus oglethorpensis: Poison Symptoms

Stomach pain, constipation and later bloody diarrhea, excessive thirst and urination if young leaves or raw acorns eaten.

Quercus oglethorpensis: Poison Toxic Principle

Gallotannins, quercitrin, and quercitin.

Quercus oglethorpensis: Poison Severity

High
Low
Medium

Quercus oglethorpensis: Causes Contact Dermatitis

No
Yes

Quercus oglethorpensis: Poison Part

Bark
Flowers
Fruits
Leaves
Roots
Sap/Juice
Seeds
Stems

Quercus oglethorpensis Whole Plant Traits

Quercus oglethorpensis: 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

Quercus oglethorpensis: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Quercus oglethorpensis: 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

Quercus oglethorpensis Cultural Conditions

Quercus oglethorpensis: 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)

Quercus oglethorpensis: Soil Drainage

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

Quercus oglethorpensis: Available Space To Plant

12 inches-3 feet
12-24 feet
24-60 feet
3 feet-6 feet
6-feet-12 feet
Less than 12 inches
more than 60 feet

Quercus oglethorpensis: NC Region

Coastal
Mountains
Piedmont

Quercus oglethorpensis: USDA Plant Hardiness Zone

thermostat
6a
thermostat
6b
thermostat
7a
thermostat
7b
thermostat
8a
thermostat
8b
thermostat
9a
thermostat
9b

Quercus oglethorpensis: Soil Texture

Clay
High Organic Matter
Loam (Silt)
Sand
Shallow Rocky

Quercus oglethorpensis Landscape

Quercus oglethorpensis: 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

Quercus oglethorpensis: 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

Quercus oglethorpensis: 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

Quercus oglethorpensis: 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

Quercus oglethorpensis: Attracts

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

Quercus oglethorpensis: Problems

Allelopathic
Contact Dermatitis
Frequent Disease Problems
Frequent Insect Problems
Invasive Species
Malodorous
Messy
Poisonous to Humans
Problem for Cats
Problem for Children
Problem for Dogs
Problem for Horses
Short-lived
Spines/Thorns
Weak Wood
Weedy