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Acer
Érable japonais à feuilles rondes
Habit (mature) · User:SB_Johnny / Wikimedia Commons · CC BY-SA 3.0
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Érable japonais à feuilles rondes

Acer japonicum
Un petit arbre caduc raffiné originaire des montagnes du Japon, de Mandchourie et de Corée, cultivé avant tout pour ses feuilles presque rondes et très lobées et pour sa brillante couleur automnale rouge-orangé. Il s'élève lentement vers une forme arrondie et étalée de 15-30 feet, et porte de petites fleurs pourpre rougeâtre au printemps avant que le feuillage ne se durcisse. Un sujet classique et un arbre de sous-bois à ombre tachetée qui souffre dans les sites chauds, secs et venteux; il n'est pas indigène d'Amérique du Nord.
Review: Source-backed
Climate fit: narrow (30/100)
Focal point
Structure
Light
Full sun / Part shade
Water
Consistent moisture
Mature size
180-360" tall · 240" apart
Hardy in zones
5a-7b
very cold to cold winters
Native in Illinois
No

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Cultivé strictement comme sujet ornemental, accent et sujet de bonsaï; ce n'est pas une culture alimentaire humaine, et aucune toxicité importante n'est signalée.

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.
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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). Érable japonais à feuilles rondes (Acer japonicum). Retrieved 2026, June 13, from https://plotwright.garden/plants/acer-japonicum
Sources for every fact
Every fact on this page traces to a source. 18 fields cited18 source-backed.
NC State Extension Gardener Plant Toolbox
University extension service
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 3.0
Backs 1 field
Image

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