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Encino costero de California

Encino costero de California

Quercus agrifolia
El roble perennifolio emblemático de la costa y las estribaciones de California: un árbol de copa amplia con hojas densas, oscuras y acebo-like, con márgenes de dientes espinosos que se enrollan por debajo, y un tronco corto, a menudo macizo. El Lady Bird Johnson Wildflower Center documenta que alcanza 20-50 feet de altura y anchura, con ejemplares viejos que llegan a los 100 feet y viven durante siglos. Es un árbol clave para la fauna silvestre: sus bellotas y su densa copa alimentan y albergan al carbonero californiano, al arrendajo de matorral y de Steller, al herrerillo dorsirrufo y a unas treinta especies más de aves, y sirve de planta hospedera de larvas de tres mariposas del género duskywing y de la mariposa hermana californiana.
Native: CA
Climate fit: narrow (28/100)
Focal point
Structure
Light
Full sun / Part shade
Water
Low water
Mature size
240-720" tall · 360" apart
Hardy in zones
8b-10b
frosty to mild winters
AHS heat range
4-11
Plant range authored in AHS heat-zone terms.
Native in Illinois
No
A documented larval host for the Polyphemus moth — 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).
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). Encino costero de California (Quercus agrifolia). Retrieved 2026, June 14, from https://plotwright.garden/plants/quercus-agrifolia
Sources for every fact
Every fact on this page traces to a source. 18 fields cited - 18 source-backed.
Lady Bird Johnson Wildflower Center Native Plant Database
Botanical research database
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-SA 2.5
Backs 1 field
Image
Oregon State University Landscape Plants
Botanical research database