Port (adulte) - Invalidsyntax / Wikimedia Commons - CC BY-SA 3.0
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Ipomée tricolore
Ipomoea tricolor
Une liane annuelle volubile à croissance rapide, originaire des régions tropicales d'Amérique, cultivée pour ses trompettes bleu azur qui s'ouvrent à l'aube et se fanent dans l'après-midi, chacune ornée d'une gorge en étoile blanc à jaune doré. Des feuilles en forme de cœur habillent des tiges qui grimpent jusqu'à 8-10 feet en une seule saison sur n'importe quel support. Spectaculaire et facile à partir de graines, mais chaque partie — en particulier les graines — est toxique si ingérée ; évitez de la planter là où animaux domestiques et enfants pourraient y avoir accès.
Climate fit: moderate (69/100)
Focal point
Structure
Container
Light
Full sun
Water
Moderate water
Mature size
96-120" tall · 12" apart
Lifecycle
True annual (one season)
AHS heat range
4-12
Plant range authored in AHS heat-zone terms.
Native in Illinois
No
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Plant support
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Non comestible.
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
›
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). Ipomée tricolore (Ipomoea tricolor). Retrieved 2026, June 14, from https://plotwright.garden/plants/ipomoea-tricolor
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