SelecTree: Tree Detail

PECAN
Carya illinoinensis

Carya illinoinensis Carya illinoinensis Carya illinoinensis Carya illinoinensis Carya illinoinensis Carya illinoinensis Carya illinoinensis Carya illinoinensis Carya illinoinensis Carya illinoinensis Carya illinoinensis Carya illinoinensis Carya illinoinensis Carya illinoinensis Carya illinoinensis

Photo Locations: Dallas Arboretum - Dallas, TX, Morton Arboretum - Lisle, IL, The National Arboretum - Washington, DC, Cal Poly State University - San Luis Obispo, CA, Petaluma, CA and Ukiah, CA

General Notes

Resistant to oak root fungus. Do not plant in saline soil. Produces edible nuts only in areas with long, hot summers. Some varieties: 'F.W.Anderson', 'Wichita', 'Choctaw', 'Mohawk', 'Stuart', 'Success'. Western Schley and Burkett need pollinators.

Has fragrant Leaf.

Native to Southern Central North America.

A Carya illinoinensis in San Jose is registered as a California Big Tree. It measures 85 feet high, with a trunk circumference of 125 inches and a crown spread of 70 feet.

Family: Juglandaceae

Tree Characteristics

Spreading and requires ample growing space.

Oval, Rounded or Umbrella Shape.

Has Deciduous foliage.

Height: 70 - 100 feet.

Width: 70 feet.

Growth Rate: 24 to 36 Inches per Year.

Longevity Greater than 150 years.

Leaves Pinnately Compound Odd, Medium Green, Gold, Deciduous.

Flowers Inconspicuous. Flowers in Spring. Has separate male and female flowers on the same tree (monoecious).

Brown Nut enclosed in a Husk, Large (1.50 - 3.00 inches), fruiting in Fall.

Bark Dark Brown or Dark Gray, Furrowed, Ridged or Scaly.

Shading Capacity Rated as Moderate in Leaf.

Shading Capacity Rated as Moderately Low out of Leaf.

Litter Issue is Wet Fruit.

Tree Site Conditions & Constraints

Sunset Zones 2, 3, 6 - 10, 12 - 14 and 18 - 20.

USDA Hardiness Zones 5 - 9.

Exposure Full Sun to Partial Shade.

Wet to Moist Soil.

Loam or Sand Texture.

Highly Acidic to Slightly Alkaline Soil pH.

Seaside Tolerance is Not Suited.

Pests & Disease Information

Resistant to Armillaria. Susceptible to Aphids, Beetle Borers, Beetle Grubs and Caterpillars, Chlorosis, Mistletoe, Phytophthora, Root Rot, Sooty Mold and Verticillium.

Health, Safety & Environmental Concerns

Branch Strength Rated as Medium Strong.

Root Damage Potential Rated as Moderate.

Allergy Health Hazard.

Desirable Wildlife Plant.

Attracts Squirrels.

Special Uses & Values

Riparian.

Cite this tree:
SelecTree. "Carya illinoinensis Tree Record." 1995-2019. Nov 22, 2019.
< https://selectree.calpoly.edu/tree-detail/carya-illinoinensis >

This tree is not part of the SelecTree Nursery Connection. If you would like to see this tree listed, or know of a nursery that sells it, please contact us at ufei@calpoly.edu.