Content Detail

The pecan is one of the most important native nut trees in North America. It is a large, straight-trunked tree native to river bottoms and rich fertile soils. The nut, a beloved pie ingredient, ripens in the fall.

  • Family (English) Walnut
  • Family (botanic) Juglandaceae
  • Planting site City parkway, Residential and parks, Wide median
  • Tree or plant type Tree
  • Foliage Deciduous (seasonally loses leaves)
  • Native locale Illinois, North America
  • Size range Large tree (more than 40 feet)
  • Mature height 70-100 feet
  • Mature width 40-75 feet
  • Light exposure Full sun (6 hrs direct light daily)
  • Hardiness zones Zone 5 (Northern Illinois), Zone 6 (City of Chicago), Zone 7, Zone 8, Zone 9
  • Soil preference Moist, well-drained soil, Wet soil
  • Drought tolerance Sensitive
  • Other tolerances Alkaline soil, Wet sites
  • Season of interest early fall, mid fall
  • Flower color and fragrance Inconspicuous
  • Shape or form Oval
  • Growth rate Moderate
  • Transplants well No
  • Planting considerations May be difficult to find in nurseries, Messy fruit/plant parts
  • Wildlife Cavity-nesting birds, Game birds, Small mammals, Songbirds, Water birds
  • Has cultivars Yes

More Information

Native Geographic Location and Habitat

Pecan is native to the southern United States and northward into Indiana and Illinois. Commonly found in low, wet areas.

Bark Description

Brownish-black bark becomes somewhat scaly with age.

Leaf Description

Leaves are large, alternate, compound and often 18 to 24 inches in length, with nine to 17 leaflets. The leaflets are narrowly elongated with a slight, sickle-shaped hook near the tip. Leaves are yellow-green and turn yellow in fall.

Flower Description

The flowers are relatively inconspicuous. Tiny male flowers are contained in catkins and small, female flowers in terminal spikes.

Fruit Description

Cylindrical, thin-winged husks reveal 2 inch long edible pecans. This is the sweetest of the hickories, ripening in the fall.

Care Knowledge

Plant Care

The pecan tree prefers moist, deeply rich, well-drained soils. It develops a long taproot, making it difficult to transplant. The wide, weeping canopy of branches and leaves creates filtered shade.

Pests, Diseases, and Tolerances

No serious problems. Tolerant of black walnut toxicity.

Donate

Your support is vital to the Arboretum, where the power of trees makes a positive impact on people’s lives.

Make a gift