Sierra Madre Occidental pine-oak forests
Sierra Madre Occidental pine-oak forests
The Sierra Madre Occidental pine-oak forests stretch from the "sky islands" of southeastern Arizona south through eight Mexican states to north of Guadalajara, covering rugged mountains and steep canyons. Fire-dependent pine-oak forests dominate elevations between roughly 1,500 and 3,300 meters, holding exceptional tree diversity with an estimated 23 pine species and over 100 oak species. The climate brings mild winters and wet summers, with mean annual precipitation around 553 mm concentrated in summer and temperatures ranging from about -3 to 28°C. As the core of the Madrean pine-oak woodlands biodiversity hotspot, the region holds roughly two-thirds of Mexico's remaining forest and woodland and is home to the thick-billed parrot.
RESOLVE 326
Nearctic
83,802 sq mi
Tropical & Subtropical Coniferous Forests
Landscape type
Tropical & Subtropical Coniferous Forests
Plant region
Nearctic
Region footprint
83,802 sq mi
Habitat pressure
Nature Could Recover (Dinerstein NNH 3)
Source & care
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Use this as the broad planting pattern for the region: Subtropical and tropical forests dominated by conifers such as pines, typically in semi-arid climates with seasonal rainfall. They often occupy higher elevations and carry fire-adapted understories. For garden decisions, pair that context with the plant list below, then narrow by your site's light, water, soil, and mature-size constraints.
Plants that can handle this region
A climate-fit shortlist from Plotwright's catalog. Start with the reliable fits, then use each plant page to check light, water, soil, mature size, and local availability.
Showing 575 of 575 climate-fit plants for this region.
Planting collections
Finished planting recipes where every member can handle this region's climate range. The fit badge uses the collection's most sensitive plant, so a resilient collection is a safer starting point than any single standout.
Starter kits for this region
Generated from catalog plants that already pass this region's climate fit gate, with native matches sorted first when the catalog has enough coverage.
Sunny pollinator border
A sunny, wildlife-forward planting assembled from plants that pass this region fit gate.
Native fit: 0/6
Climate resilient: 6/6
Wildlife links: 17
Host/specialist links: 4
Forage/pollination links: 20
Shelter links: 0
Shade-edge planting
A softer edge kit for woodland margins, porches, and mixed-light garden edges.
Native fit: 0/6
Climate resilient: 6/6
Wildlife links: 12
Host/specialist links: 2
Forage/pollination links: 15
Shelter links: 0
Resilient shrub layer
A woody structure layer led by plants that fit both current and projected regional conditions.
Native fit: 0/6
Climate resilient: 6/6
Wildlife links: 21
Host/specialist links: 4
Forage/pollination links: 26
Shelter links: 3
Similar planting regions
Browse other regions in the same biome. Their plant lists can suggest species and combinations worth comparing.
Where this ecoregion reaches
The countries, US states, and Canadian provinces this ecoregion touches, from a spatial join of its RESOLVE polygon against Natural Earth boundaries.
Countries
States and provinces
Educator packet
Region packet
Sierra Madre Occidental pine-oak forests educator packet
The Sierra Madre Occidental pine-oak forests stretch from the "sky islands" of southeastern Arizona south through eight Mexican states to north of Guadalajara, covering rugged mountains and steep canyons. Fire-dependent pine-oak forests dominate elevations between roughly 1,500 and 3,300 meters, holding exceptional tree diversity with an estimated 23 pine species and over 100 oak species. The climate brings mild winters and wet summers, with mean annual precipitation around 553 mm concentrated in summer and temperatures ranging from about -3 to 28°C. As the core of the Madrean pine-oak woodlands biodiversity hotspot, the region holds roughly two-thirds of Mexico's remaining forest and woodland and is home to the thick-billed parrot.
Realm
Nearctic
Dominant biome
Tropical & Subtropical Coniferous Forests
Approximate area
83,802 square miles
States / provinces
Not recorded
Climate descriptor
Not recorded
Classroom prompts
- Which climate and biome facts explain why this region supports its characteristic plants?
- How do native-plant and wildlife-support claims differ from a species-presence claim?
- Which source-backed facts would you cite before using this region in a classroom map activity?
Use the Sources & citations section below for page citation styles and region source links.
Sources & citations
Cite this page
For lesson plans, articles, or regional planting notes that use this Plotwright page. To cite the underlying ecoregion framework or a specific editorial profile, use the source cards below.
Plotwright. (n.d.). Sierra Madre Occidental pine-oak forests (Sierra Madre Occidental pine-oak forests). Retrieved 2026, October 9, from https://plotwright.com/regions/resolve-326
Sources for this region
This page cites Plotwright first for the compiled view, then lists the upstream framework, climate, and editorial source pages so readers can cite the original material directly.
RESOLVE 2017 Terrestrial Ecoregions (Dinerstein et al.)
Primary ecoregion framework


















































