How to Grow Pecan Caddo

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Pecan Caddo

Carya illinoinensis 'Caddo'

tree

Pecan Caddo is a cultivar of the native American pecan tree, selected for its medium to large nut size, good flavor, and reliable production. This deciduous tree produces an abundant harvest of thin-shelled pecans suitable for both commercial and home orchard use. It is moderately precocious, typically beginning production within 5-8 years of planting.

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Example Pecan Caddo timeline · Pittsburgh, PA (Zone 6b)

Plant Pecan Caddo
Around Apr 17

Near Pittsburgh's average last spring frost.
Tend & protect
Late spring–summer

Watering, feeding, and pest-watch reminders.
Harvest Pecan Caddo
Late summer into fall

Before the first fall frost (≈ Nov 8)

Sample dates for Pittsburgh, PA. Sign up to get exact Pecan Caddo dates for your own zip code.

Growing Conditions

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Sun: Full sun, 8+ hours daily

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Water: Moderate to high water needs, especially during nut fill (July-September). Requires 40-50 inches of annual rainfall or supplemental irrigation. Drought stress during nut development significantly reduces yield.

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Spacing: 360 inches

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Days to maturity: 5-8 years to first production; 10-15 years for full commercial production

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Planting depth: Plant bare-root or container trees at same depth as nursery container; top of root ball level with soil surface

Soil

Type: Well-draining loamy or sandy loam soil

pH: 6.0-7.0

Amendments:

Compost aged manure zinc sulfate (pecan trees are zinc-sensitive) balanced NPK fertilizer

Growing Zones

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Thrives in zones 7-9; performs best in the Lower South and Gulf Coast regions

7a 7b 8a 8b 9a 9b

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Growth Stages

Establishment (Years 1-2)

2 years

Young tree develops branch structure and root system. Minimal nut production. Tree gradually increases in height and canopy spread.

Water deeply 1-2 times weekly; mulch to retain moisture; prune to establish strong central leader; protect from competing vegetation; apply zinc foliar spray if deficiency noted

Young Vegetative (Years 3-5)

2-3 years

Tree grows rapidly, reaching 20-30 feet. Branch framework develops. Early female flowers may appear; male catkins develop.

Continue deep watering during dry periods; fertilize in spring with balanced formula; maintain mulch layer; light pruning for shape; monitor for pest activity

Early Production (Years 5-8)

3-4 years

First nuts appear; yield gradually increases. Tree reaches 30-40 feet in height. Catkins and flowers are more abundant.

Ensure consistent irrigation May-September; apply nitrogen in spring; maintain zinc levels; thin developing nuts if extremely heavy set; begin pest management as needed

Full Production (Years 10+)

30-50+ years

Tree reaches mature size (60-80 feet potential). Heavy annual nut production; mature pecan-colored nuts in husks. Strong male catkins and female flower clusters.

Maintain consistent deep watering (1-2 inches weekly) June-September; fertilize spring and summer; manage pests and disease actively; thin or thin nuts in alternate years if needed for size

Harvest (Fall)

6-8 weeks

Nuts mature and husks split naturally. Pecans begin dropping to ground in September-November depending on location.

Shake tree or use mechanical harvester; collect fallen nuts promptly; clean and dry nuts; store in cool, dry location; proper drying prevents mold and extends shelf life

Companion Planting

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Plant with:

Nitrogen-fixing legumes (under-planting) Cover crops (winter rye, clover) Native understory plants Pollinator-friendly perennials

Avoid planting near:

Black walnut (toxic juglone) Walnut trees Other pecan trees (if very close - competition for water) Plants sensitive to juglone

Common Pests

Early harvest before weevil emergence; insecticidal applications in late August-early September; sanitation of fallen fruit; pheromone traps; resistant varieties where available
Timely insecticide sprays (late June-July); proper orchard sanitation; early harvest; native parasitoid encouragement
Monitor for presence; insecticidal soap; horticultural oil; natural predators; generally tolerable on mature trees
Resistant rootstock selection; sulfur sprays; acceptable damage on mature trees; mostly affects young nursery stock
Horticultural oil; sulfur applications; maintain tree vigor; monitor leaf damage

Uses

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Fresh eating and baking

Culinary

Pecan Caddo nuts are prized for their mild, buttery flavor and thin shells that make them easy to crack and use whole or halved. Popular in pies, cookies, pralines, and as a nutritious snack. [source]

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Oil and nut butter production

Culinary

Pecans are high in monounsaturated fats and make excellent oil and creamy nut butter. Rich in antioxidants and vitamin E. [source]

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Heart-healthy nutrition

Medicinal

Pecans contain polyphenols and other compounds linked to cardiovascular health and may help reduce cholesterol levels and inflammation. [source]

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Wood for lumber and firewood

Household

Pecan wood is hard, attractive, and suitable for furniture, flooring, and smoking meats. Also excellent firewood with high heat output. [source]

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Wildlife food source

Wildlife

Pecan trees provide essential mast (nuts) for squirrels, deer, raccoons, and birds. The tree also offers shelter and nesting habitat for wildlife. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

Pecans mature in mid to late fall (September-November, depending on zone). Harvest when husks naturally split and nuts begin falling. Collect nuts from ground promptly to prevent mold. Shake tree or use mechanical harvester for efficiency. Dry nuts to 5-7% moisture content for storage; cure at 95-100°F for 7-10 days. Store in cool (50-70°F), dry location; shelled pecans freeze well for extended storage.

Fun Facts

🌱 Pecan Caddo was released by the USDA Agricultural Research Service and is named after Caddo Parish, Louisiana. It was selected for consistent production and thin shells.
🌱 A mature pecan tree can produce 40-180 pounds of nuts per year, with individual trees living 300+ years and remaining productive throughout their lifespan.
🌱 Pecans require cross-pollination from another pecan variety; Caddo is protandrous (sheds pollen before female flowers are receptive), making it an excellent pollen donor for other cultivars.

Gardening Terms

New to gardening? Learn about terms used in this guide:

Annual Cultivar Full Sun Mulch

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