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Pecan

Carya illinoinensis, Juglandaceae

Zones
5–9
Layer
Canopy
Lifespan
Perennial
Growth
Moderate

Guild Roles

ProducerShade Provider

Growing Conditions

Sun

Full Sun (optimal)

Water

Moderate

Soil pH

6 – 7

Tolerances

Drought
Frost
Heat
Pest Resistance
Disease Resist.

Companion Plants

PassionflowerPassiflora incarnata
Physical SupportBeneficial Insect Habitat
Shagbark HickoryCarya ovata
Pollinator Sharing
White Wild IndigoBaptisia alba
Nitrogen Fixation
American PersimmonDiospyros virginiana
Pollinator SharingBeneficial Insect Habitat

Antagonistic Plants

Shellbark HickoryCarya laciniosa

Both large hickory species require significant space and resources, competing when overcrowded

ArugulaEruca vesicaria

Pecan trees produce juglone in smaller amounts than black walnut but can still inhibit sensitive plants like brassicas

Uses

Functions

Food

Edible Parts

Seeds

Common Questions

What zones does Pecan grow in?

Pecan grows in USDA hardiness zones 5 through 9.

What are good companion plants for Pecan?

Good companions for Pecan include Passionflower, Shagbark Hickory, White Wild Indigo, American Persimmon.

Design guilds with Pecan and see companion relationships visually.

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