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Gaillarde annuelle
Habit (mature) · gailhampshire / Wikimedia Commons · CC BY 2.0
Limited coverage

Gaillarde annuelle

Gaillardia pulchella
Membre rapide et amateur de soleil de la famille des astéracées cultivé comme annuelle de saison chaude, Gaillardia pulchella produit une longue succession de fleurs en marguerite de 2 pouces du début de l'été jusqu'au gel. Les fleurs ligulées flamboient en bandes de rouge et d'or autour d'un centre bombé plus foncé — le coloris feu d'artifice qui lui vaut son nom — sur une touffe ramifiée aux tiges grêles de 12 à 24 pouces. Elle est faite pour les sols chauds, secs et ensoleillés où les plantes de massif plus exigeantes boudent, fleurissant le plus fort précisément quand la chaleur de l'été culmine.
Review: Source-backed
Climate fit: moderate (45/100)
Border
Pollinator
Filler
Light
Full sun / Part shade
Water
Low water
Mature size
12-24" tall · 12" apart
Lifecycle
True annual (one season)
Native in Illinois
No

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Ses capitules ouverts, riches en nectar et en pollen, attirent un large mélange d'abeilles et de papillons qui font la pollinisation croisée.

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...

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). Gaillarde annuelle (Gaillardia pulchella). Retrieved 2026, June 13, from https://plotwright.garden/plants/gaillardia-pulchella
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 2.0
Backs 1 field
Image

Community photos

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