Pacanier
Carya illinoinensis
Le plus grand des caryers et l'arbre à noix le plus précieux originaire d'Amérique du Nord — un géant caduc des zones alluviales que Missouri Botanical Garden situe à 75-100 feet (parfois jusqu'à 150) avec une large couronne arrondie. Les feuilles composées imparipennées portent 9 à 17 folioles falciformes finement dentées, et les noix sucrées comestibles mûrissent en automne dans une enveloppe mince à quatre sections. Monoïque et pollinisé par le vent, il a besoin d'au moins deux variétés à proximité pour une bonne fructification, et de 8 à 10 ans depuis la graine avant de produire.
Native: 20 US states
Climate fit: broad (71/100)
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
Future
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
USDA
Published baseline for this location from 1991-2020.
Source: USDA Plant Hardiness Zone Map 2023 (1991-2020 climatology) via ArcGIS FeatureServer
Well-suited
2050
Zone 7a
Plotwright
Projected zone for this same location in 2050 (2041-2070) using SSP3-7.0 (regional rivalry).
Well-suited
In plain terms: This location is in Zone 6b today. Its hardiness profile is cold winters, and coldest nights are typically around -3°F. By 2050, the projected hardiness zone is Zone 7a based on SSP3-7.0 (regional rivalry). That is a +0.5-zone shift from Zone 6b to Zone 7a by 2050.
✓
Well-suited today and still thriving in 2050.
Heat tolerance
Future
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...
Where this plant fits
Suitable across 41 ecoregions — 39 climate-resilient through 2070 · 1 suited today · 1 newly possible by 2070. Best matches first.
Appalachian mixed mesophytic forests
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Appalachian-Blue Ridge forests
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Arizona Mountains forests
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Atlantic coastal pine barrens
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Blue Mountains forests
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Canadian Aspen forests and parklands
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Central Pacific Northwest coastal forests
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Central Tallgrass prairie
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Central-Southern Cascades Forests
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Chilean Matorral
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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). Pacanier (Carya illinoinensis). Retrieved 2026, June 14, from https://plotwright.garden/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
Lady Bird Johnson Wildflower Center Native Plant Database
Botanical research database