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Flor de Pascua (Nochebuena)
Habit (mature) · Vengolis / Wikimedia Commons · CC BY-SA 4.0
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Flor de Pascua (Nochebuena)

Euphorbia pulcherrima
La planta navideña más famosa del mundo es, en su tierra natal, un arbusto tropical desgarbado. Nativa desde México hasta Guatemala, Euphorbia pulcherrima se cultiva casi en todas partes como un regalo compacto en maceta por su estallido de color invernal — pero ese color no son flores. Los vistosos 'pétalos' rojos, rosados, blancos o jaspeados son brácteas (hojas modificadas); las verdaderas flores son los pequeños ciatos amarillo-verdosos en forma de copa agrupados en el centro. Las brácteas se colorean solo en respuesta a noches largas e ininterrumpidas, por lo que las flores de Pascua se tornan para las fiestas de invierno y por lo que una planta de interior en una habitación iluminada por lámparas a menudo se niega a recolorearse. Es sensible a las heladas y rústica en el suelo solo en las zonas USDA 9a-11b, donde crece como un arbusto abierto, erecto y multitallo de 3-12 feet de altura. Una advertencia persistente: es LEVEMENTE tóxica — el látex blanco lechoso (savia) puede irritar la piel y los ojos y causar un leve malestar estomacal si se ingiere — pero su reputación mortal es un mito desmentido hace tiempo, no un peligro real.
Review: Source-backed
Climate fit: narrow (30/100)
Container
Focal point
Structure
Light
Part shade
Water
Consistent moisture
Mature size
36-144" tall · 36" apart
Hardy in zones
9a-11b
frosty to nearly frost-free winters
Native in Illinois
No
Se cultiva estrictamente como ornamental — no es alimento.

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).
Won't grow here
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 and still out of range 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). Flor de Pascua (Nochebuena) (Euphorbia pulcherrima). Retrieved 2026, June 13, from https://plotwright.garden/plants/euphorbia-pulcherrima
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
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Designer notes
Wikimedia Commons
Photo · CC BY-SA 4.0
Backs 1 field
Image

Community photos

The photos above are our reviewed reference set, curated for accuracy.