Port (adulte) - Eric in SF / Wikimedia Commons - CC BY-SA 3.0
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Géranium maculé
Geranium maculatum
Une vivace indigène formant des touffes dans l'est de l'Amérique du Nord, au feuillage palmatilobé et aux fleurs printanières en bouquets, roses à violettes, à cinq pétales. Parmi les vivaces de sous-bois indigènes les plus fiables pour les sites frais et humides ; tolère un large éventail de conditions et se naturalise lentement par semis spontanés.
Native: 48 US states + 4 CA provinces
Climate fit: broad (94/100)
Pollinator
Border
Filler
Light
Full sun / Part shade
Water
Consistent moisture
Mature size
18-24" tall · 18" apart
Hardy in zones
3a-11b
brutally cold to nearly frost-free winters
AHS heat range
1-11
Plant range authored in AHS heat-zone terms.
Native in Illinois
Yes
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Heat and sun protection
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Native across 52 US states and Canadian provinces — a wide-ranging part of North America's plant communities.
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 45 ecoregions — 45 climate-resilient through 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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California coastal sage and chaparral
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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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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). Géranium maculé (Geranium maculatum). Retrieved 2026, June 14, from https://plotwright.garden/plants/geranium-maculatum
Sources for every fact
Every fact on this page traces to a source. 18 fields cited - 18 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