Northern Pin Oak
ExplorePlants
Northern Pin Oak
quercus ellipsoidalis
The Northern Pin Oak (Quercus ellipsoidalis) is a medium-sized deciduous tree native to the north-central United States and parts of southern Canada. Well-known for its adaptability to dry, sandy soils, this resilient oak thrives in challenging environments where other hardwoods struggle. It plays a crucial ecological role by providing nesting sites for birds, cover for small mammals, and a vital autumn food source through its abundant acorns. In the landscape, the Northern Pin Oak is highly valued for its striking pyramidal shape in youth, which matures into an ornamental, open canopy. Its deeply lobed leaves turn brilliant shades of red and bronze in the autumn, creating a spectacular display. The persistent dead branches on its lower trunk, a characteristic known as marcescence, give this tree its distinctive "pin-like" appearance and provide winter structure to the forest understory.
Habitat: Typically found in dry, acidic, sandy soils of upland forests, oak savannas, and along glacial outwash plains.
Appearance
The Northern Pin Oak typically reaches heights of 15 to 22 meters, featuring a straight trunk and a rounded, open crown at maturity. Its leaves are deeply divided by C-shaped sinuses into 5 to 7 lobes, each tipped with sharp bristles, displaying a glossy green top and a paler underside. The bark is greyish-brown, starting smooth and developing shallow, furrowed ridges as the tree ages. The small, ellipsoidal acorns, from which the scientific name is derived, are about 1 to 2 cm long, encased halfway in a saucer-like, hairy cap.
KingdomPlantaePhylumTracheophytaClassMagnoliopsidaOrderFagalesFamilyFagaceaeGenusQuercus
Category
PlantsRarity
Common
Danger
1/5 · Very low
Snaps
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Interesting facts
Its wood is exceptionally hard and heavy, and historically was used for fuel, fence posts, and railway ties.
The lower branches of the Northern Pin Oak tend to persist for years after dying, creating a protective 'shrubby' layer around the lower trunk.
The species name 'ellipsoidalis' refers to the distinct, egg-shaped or ellipsoidal acorns it produces.
Special abilities
Ability
Acidic Soil Tolerance
Highly adapted to dry, nutrient-poor, sandy, and acidic soils where other oak species struggle to survive.
Ability
Marcescent Foliage
Retains dead lower branches and sometimes dry winter foliage, which deters herbivores and helps trap snow to increase moisture around the roots.
Ability
Drought Resistance
Features a deep, extensive taproot system that efficiently searches for deep groundwater during periods of prolonged drought.
Measurements & details
- Length
- 1500-2200 cm
- Weight
- 3000-9000 kg
- Lifespan
- 100-150 years
Diet & Feeding
As a photosynthetic plant, the Northern Pin Oak generates its own energy from sunlight, water, and atmospheric carbon dioxide, while absorbing essential minerals through its roots.
Primary Foods
- Sunlight
- Water
- Carbon Dioxide
- Nitrogen
- Phosphorus
- Potassium
Ecological connections
mutualism
Blue Jay
Cyanocitta cristata
Consumes the acorns and helps disperse the seeds by burying them in the forest floor.
eaten by
White-tailed Deer
Odocoileus virginianus
Feeds on the highly nutritious acorns and browses the tender young twigs.
parasite
Oak Gall Wasp
Amphibolips confluenta
Lays eggs on leaves and twigs, inducing the tree to form spherical galls that protect larvae.
Traits
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Also known as
No aliases listed yet.
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Safety
Danger
1/5 · Very low
No special safety notes yet.
Frequently Asked Questions
How to identify Northern Pin Oak?
The easiest way to identify Northern Pin Oak is to use the Snappit nature identifier app.
How long is Northern Pin Oak?
1500-2200 cm
How much does Northern Pin Oak weigh?
3000-9000 kg
How long does Northern Pin Oak live?
100-150 years
What does Northern Pin Oak eat?
As a photosynthetic plant, the Northern Pin Oak generates its own energy from sunlight, water, and atmospheric carbon dioxide, while absorbing essential minerals through its roots.
Where is Northern Pin Oak usually found?
Typically found in dry, acidic, sandy soils of upland forests, oak savannas, and along glacial outwash plains.
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