Pecan

Carya illinoinensis 'Stuart'

tree

Pecan (Carya illinoinensis) is the largest of the hickories and the classic Southern nut tree, an upright, spreading giant that can top 70 ft with an equally wide canopy. It is grown across the Coastal Plain and Piedmont for its buttery, thin-shelled nuts, but is not suited to cold mountain country. Pecans are slow to come into bearing - typically 5 to 10 years - and need a long, warm season to fill nuts. Because the trees become so large and need a second cultivar for pollination, they suit big rural yards far better than small lots.

✅ Plant alongside

Good neighbors that attract beneficial insects or deter pests

• Clover — A nitrogen-fixing living groundcover for the orchard floor under young trees
• Comfrey — Deep roots mine nutrients and make a mulch ring around the trunk
• Yarrow — Draws beneficial insects that help keep aphids in check

❌ Keep away from

🛡️ Pest & disease prevention

Proactive ways to stop trouble before it starts — tap a name with an arrow for its full guide

• Pecan scab →

  The major pecan disease in the humid Southeast; plant scab-resistant cultivars and rake up fallen leaves and shucks to cut overwintering spores

• Pecan weevil →

  Adults bore into nuts in late summer; sanitation and well-timed trunk sprays where pressure is high reduce damage

• Yellow aphids →

  Honeydew and sooty mold follow heavy numbers, but trees tolerate many aphids and beneficial insects usually catch up

🌾 Harvest & storage

Pecans are ready in mid to late fall when the green shucks split open and release the nuts. Harvest as soon as they mature, gathering frequently, because nuts left on wet ground lose quality fast and draw squirrels and other foragers. Knock remaining nuts down with a padded pole, then dry them in a single layer in a warm, airy place for one to two weeks before storing. Properly cured in-shell pecans keep for months in a cool spot.

🥗 Nutrition & benefits

Pecans are prized for their rich, buttery flavor and high content of healthy fats, used raw, toasted, in pies, and pressed for oil. The tree also produces some juglone like its walnut relatives, though far less than black walnut; still, keep tomatoes and potatoes out of the densest root zone. Beyond the nuts it is a magnificent, long-lived shade and wildlife tree for a large property.