Porte (maduro) - Donald Hobern / Wikimedia Commons - CC BY 2.0
Cobertura limitada
Boca de dragón
Antirrhinum majus
La clásica boca de dragón de los jardines rústicos — su nombre proviene de las flores bilabiadas con bisagra, a modo de «boca de dragón», que se abren de golpe al apretarlas por los lados. Perenne tierna originaria del suroeste de Europa, resistente en las Zonas USDA 7-10 pero cultivada casi en todas partes como anual de estación fría, con altas espigas de flores blancas, amarillas, rosadas, rojas, anaranjadas, melocotón o moradas desde primavera hasta las heladas. Los colibríes y las mariposas frecuentan sus flores, y las espigas cortadas son un clásico infaltable en el jardín para flor cortada.
Climate fit: narrow (38/100)
Border
Container
Pollinator
Light
Full sun
Water
Moderate water
Mature size
12-36" tall · 9" apart
Hardy in zones
7a-10b
cold to mild winters
AHS heat range
1-9
Plant range authored in AHS heat-zone terms.
Native in Illinois
No
A documented larval host for the Common buckeye — caterpillars feed on its foliage before becoming the next generation.
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
Won't grow here
2050
Zone 7a
Plotwright
Projected zone for this same location in 2050 (2041-2070) using SSP3-7.0 (regional rivalry).
Marginal
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.
✕→⚠
Out of range today, but marginally possible by 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 43 ecoregions — 40 climate-resilient through 2070 · 3 newly possible by 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). Boca de dragón (Antirrhinum majus). Retrieved 2026, June 14, from https://plotwright.garden/plants/antirrhinum-majus
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
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Moisture
Hardiness
Heat zone
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Spacing
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Regional guidance
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Designer notes