Port (adulte) - Robert Flogaus-Faust / Wikimedia Commons - CC BY 4.0
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Digitale pourpre
Digitalis purpurea
Grande bisannuelle ou vivace de courte durée de l'Europe occidentale, méridionale et centrale, cultivée depuis longtemps dans les jardins de cottage et en lisière de bois pour ses spectaculaires épis unilatéraux de fleurs pendantes en entonnoir. La première année forme une rosette basale de feuilles molles et gaufrées ; la seconde émet un épi de 2 à 5 feet de fleurs tubulaires rose fraise, violettes ou blanches, tachetées de pourpre et de blanc à l'intérieur, de mai jusqu'en juin. Le Missouri Botanical Garden PlantFinder note que les fleurs attirent les colibris — et que la plante est très vénéneuse, ses feuilles étant la source du médicament cardiaque digitaline.
Climate fit: moderate (45/100)
Border
Pollinator
Focal point
Light
Full sun / Part shade
Water
Moderate water
Mature size
24-60" tall · 18" apart
Hardy in zones
4a-8b
very cold to frosty winters
Native in Illinois
No
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Très vénéneuse — toutes les parties contiennent des hétérosides cardiotoniques, et le Missouri Botanical Garden PlantFinder note que les feuilles sont la source du médicament cardiaque digitaline.
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 40 ecoregions — 35 climate-resilient through 2070 · 5 suited today. 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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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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Colorado Rockies forests
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Cross-Timbers savanna-woodland
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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). Digitale pourpre (Digitalis purpurea). Retrieved 2026, June 14, from https://plotwright.garden/plants/digitalis-purpurea
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
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Lifecycle
Regional guidance
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Designer notes