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Pecan

Pecan

Carya illinoinensis
The largest of the hickories and the most valuable nut tree native to North America — a deciduous lowland giant that Missouri Botanical Garden lists at 75-100 feet (occasionally to 150) with a broad rounded crown. Odd-pinnate compound leaves carry 9-17 falcate, finely toothed leaflets, and the sweet edible nuts ripen in fall inside a thin four-sectioned husk. Monoecious and wind-pollinated, it needs at least two varieties nearby for reliable nut set, and 8-10 years from seed before it bears.
Native: 20 US states
Climate fit: broad (70/100)
Focal point
Structure
Edible
Light
Full sun
Water
Consistent moisture
Mature size
900-1200" tall · 480" apart
Hardy in zones
5a-9b
very cold to frosty winters
AHS heat range
4-12
Plant range authored in AHS heat-zone terms.
Native in Illinois
Yes

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A documented larval host for the Luna moth and 1 other species — caterpillars feed on its foliage before becoming the next generation.

Cold hardiness

These values are location-based: this location's current hardiness is the baseline, and the 2050 value is a projected future climate for this same location.
Now
Zone 6b
Plotwright
USDA Zone 6b
-5°F to 0°F
Well-suited
Zone 7a
Plotwright
0°F to 5°F
Well-suited
In plain terms: This location has cold winters. Its winters are projected to keep warming through 2050.
Well-suited today and still thriving in 2050.

Heat tolerance

Heat tolerance values are location-based too: heat days today are observed at this site, and the 2050 value projects this same location under a future climate.
Loading AHS heat-zone data for this location...

Similar plants

Browse lateral options with similar roles, light needs, size, or native-range overlap; these are not filtered for a better climate fit.
Diospyros virginiana
American persimmon
A tough, medium-sized native tree of the eastern and midwestern United States, grown as much for its showy edible orange fruit as for its distinctive thick, dark gray bark broken into rectangular blocks. Small urn-shaped white-to-greenish-yellow flowers open in May and June, and the sweet fruit ripens after frost. Largely dioecious — a female tree needs a male pollinizer nearby to set fruit — and notably drought- and walnut-tolerant once established.
Tree
Full sun / Part sun / Part shade
Moderate water
Zones 4a-9b
Climate: broad
Focal point
Structure
Edible
Pollinator
Asimina triloba
Pawpaw
A small native understory tree of eastern North American forests producing the largest native fruit on the continent — a banana-custard-flavored tropical-tasting drupe in late summer. The canonical larval host for zebra swallowtail (Protographium marcellus, an Annonaceae specialist) per NC State; without pawpaw colonies the butterfly cannot reproduce. Self-incompatible — two genetically distinct trees are required for fruit set. Fly-and-beetle-pollinated via fetid maroon spring flowers.
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Full sun / Part sun / Part shade
Moderate water
Zones 5a-9b
Climate: broad
Structure
Focal point
Edible
Amelanchier canadensis
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A small native tree with white spring flowers, edible summer berries, and copper to red fall color.
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Zones 3-8
Climate: broad
Focal point
Structure
Edible
Pollinator
Sambucus canadensis
American elderberry
A fast, suckering native shrub of streambanks and moist thickets across eastern North America, grown for huge flat-topped cymes of tiny lemon-scented white flowers in early summer and the clusters of dark elderberry drupes that follow. Spreads by root suckers into naturalized colonies 5-12 feet tall and wide; the flowers feed butterflies and the showy fruit feeds birds. The raw berries are not eaten fresh — they are cooked into jelly, pie, and wine.
Shrub
Full sun / Part sun / Part shade
Consistent moisture
Zones 3-9
Climate: broad
Structure
Edible
Pollinator
Focal point
Castanea dentata
American chestnut
Once the dominant canopy hardwood of the eastern United States forest — an estimated four billion trees, prized for fast growth, rot-resistant timber, and an enormous annual crop of sweet edible nuts that fed people, livestock, and wildlife alike. In the early 1900s an introduced Asian fungus, chestnut blight (Cryphonectria parasitica), swept through and functionally destroyed it: by the 1950s the species was effectively extinct as a mature forest tree. Surviving root systems still send up sprouts from old stumps, but the blight almost always girdles and kills them before they can grow large enough to flower and reproduce. The honest reality for a gardener is that you cannot reliably grow a mature wild-type American chestnut today. The realistic paths are blight-resistant backcross hybrids from The American Chestnut Foundation or transgenic blight-tolerant lines still being deployed — not a pure wild seedling, which the blight will almost certainly kill.
Tree
Full sun / Part shade
Moderate water
Zones 5a-8b
Climate: narrow
Structure
Focal point
Edible
Malus domestica
Apple
The domesticated orchard apple — a deciduous Rosaceae tree grown for its showy, edible fruit and fragrant April blossom of five white-to-pink petals around a ring of yellow stamens. Not native to North America (the genus Malus spans Europe, Asia, and North America, but the cultivated apple is an Old World hybrid lineage). Almost all varieties are self-incompatible: a second, different apple cultivar blooming at the same time must be nearby for fruit to set, and trees are grown on dwarf, semi-dwarf, or standard rootstocks that decide final size.
Tree
Full sun
Moderate water
Zones 5a-8b
Climate: moderate
Edible
Focal point
Structure

Sources & citations

Cite this page
For lesson plans, articles, or research that uses this page. To cite a single upstream fact instead, use its specific source listed below.
Plotwright. (2026, May 17). Pecan (Carya illinoinensis). Retrieved 2026, June 24, from https://plotwright.com/plants/carya-illinoinensis
Sources for every fact
Every fact on this page traces to a source. 18 fields cited - 18 source-backed.
Missouri Botanical Garden PlantFinder
Botanical research database
Backs 17 fields
Identity
Summary
Plant type
Light
Moisture
Hardiness
Heat zone
Size
Spacing
Habit
Design roles
Seasonal interest
Growth stages
Lifecycle
Regional guidance
Success tips
Designer notes
Wikimedia Commons
Photo · CC BY-SA 4.0
Backs 1 field
Image
Lady Bird Johnson Wildflower Center Native Plant Database
Botanical research database