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California interior chaparral and woodlands

California interior chaparral and woodlands

California interior chaparral and woodlands
The California interior chaparral and woodlands ecoregion forms an elliptical ring of hills and low mountains around California's Central Valley, stretching from Shasta Lake south toward Wheeler Ridge. Its biologically rich mosaic includes chaparral, grasslands, oak savannas and woodlands, serpentine communities, pine and montane conifer forests, riparian forests, and wetlands. The climate is Mediterranean, with warm, dry summers and mild, wet winters. Notably, it hosts the largest number of endemic mammals of any ecoregion in the U.S. and Canada, with the Alameda whipsnake as its flagship species; urban sprawl and rural development are leading threats.
RESOLVE 423
Nearctic
27,780 sq mi
Mediterranean Forests, Woodlands & Scrub
Landscape type
Mediterranean Forests, Woodlands & Scrub
Plant region
Nearctic
Region footprint
27,780 sq mi
Habitat pressure
Nature Could Recover (Dinerstein NNH 3)
Plan for hot, dry summers, mild wet winters, and plants built for seasonal swings. This climate favors drought-adapted shrubs, bulbs, herbs, and open-woodland plants; local native guidance matters because fire, habitat loss, and endemism are part of the planting story.

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 537 of 537 climate-fit plants for this region.
Reliable climate fits
Good bets for now and later
521 plants
These plants fit the region today and stay within range under the mid-century projection. Start here when you want choices with the least climate regret.
Good now, not later
Good now, less certain later
12 plants
These plants fit the region as it is today. The projection moves them outside their listed range, so treat them as shorter-horizon or higher-care choices.
A close stand of balsam firs seen from ground to tip, their narrow spire crowns and short dense branches dusted with a light coating of snow, against a clear blue sky.
Abies balsamea
Balsam fir
Balsam fir (Abies balsamea) is THE Christmas tree of the northeast and, for most gardens, a tree to admire rather than plant. Missouri Botanical Garden is unambiguous about why: the species is native to cool climates and is not recommended for planting in the hot and humid summer conditions south of USDA Zone 5, it is generally intolerant of urban pollution, and MBG explicitly does not recommend it for its own St. Louis climate. Wikipedia puts the same limit the other way round - it wants a mean annual temperature near 40°F with consistent moisture, and low moisture combined with high temperature is what stops the range. This is a boreal tree. It runs from Labrador and Newfoundland west to Alberta and south to Minnesota, Wisconsin, New England and New York, then survives in the Appalachians only by climbing, hanging on at 2,500 to 5,000 feet as far south as Virginia and West Virginia. Where it does suit the climate it is superb: a narrow aromatic spire of 50 to 70 feet and only 15 to 25 feet wide, clothed in flat blunt needles 0.6 to 1.2 inches long, dark green above with two chalk-white stomatal bands beneath and twisted at the base so they lie in two horizontal ranks either side of the shoot. Two features are worth learning by hand. The young bark is smooth and grey and studded with RESIN BLISTERS that spray when punctured - no spruce or pine does that - and the erect cones, 2 to 3 inches and dark purple, ripen brown and DISINTEGRATE on the branch in September, dropping their scales and leaving a bare central spike standing on the twig. A fir cone is therefore something you almost never find whole on the ground, which is the single fastest way to tell Abies from Picea. That resin is also the reason this tree has a place in the history of optics: Canada balsam, the oleoresin tapped from those bark blisters, dries to a transparent mass with a refractive index near 1.52, effectively the same as crown glass, so it worked as an invisible glue for cementing lens elements and became the standard mounting medium for microscope slides from about 1830. It was phased out during the Second World War for polyester, epoxy and urethane adhesives, which do not yellow and have far better thermal and solvent resistance. The honest catch list is long: balsam woolly adelgid, spruce budworm (this is the budworm's preferred main host), bark beetles, spider mites in hot spells, cankers, heart rot, root rot, needle rust and twig blight, plus heavy deer browsing, shallow roots that make it wind-firm only in a stand, and a working life measured in decades rather than centuries.
Tree
Full sun / Part shade
Consistent moisture
Zones 3a-6b
Climate: moderate
Focal point
Structure
Grand fir boughs seen from above, the flat needles laid in strictly two-ranked combs either side of brown twigs, with needles of clearly unequal length, over brown forest-floor leaf litter and moss.
Abies grandis
Grand fir
Grand fir (Abies grandis) is one of the great trees of the Pacific Northwest and a poor choice for most gardens, and those are the same fact rather than two: it is built for cool, wet, deep-soiled maritime ground and it is built enormous. Missouri Botanical Garden gives it 100 to 250 feet with a 4 to 6 foot trunk, says it performs poorly in most areas of the eastern United States, and states flatly that it is not recommended for planting south of USDA Zone 6. It is also fast - the coastal form can put on more than 5 feet a year while young - so the mistake compounds quickly, and it is not a durable tree in return: historically it reached nearly 300 years, but 100 is more typical under modern stress. Its bark is thin and it cannot seal a wound with pitch, so fire scars, pruning cuts and logging damage open the trunk to heart rot, and east of the Cascades a trunk carrying Indian paint fungus is rotten inside whether or not the crown looks it. Balsam woolly adelgid, bark beetles, root rot and needle rust are all on Missouri Botanical Garden's problem list, and western spruce budworm epidemics killed grand fir at scale in the eastern Cascades and the Blue Mountains in the late twentieth century. What is genuinely wonderful about it belongs on the label too. The needles are flat, blunt and laid in two neat horizontal ranks like the teeth of a comb, and along one side of a twig they alternate short, long, short - a sawtooth that white fir rarely shows and the quickest way to name the tree. Crushed, they smell strongly of tangerine, which is why it is also called stinking fir, and no other fir in this group smells like it. The cones stand UPRIGHT on the upper branches and never fall whole; they break apart on the tree in autumn and leave a bare spike standing on the branch, which is the single cleanest way to separate any Abies from a spruce or a pine.
Tree
Full sun / Part shade
Consistent moisture
Zones 5a-6b
Climate: narrow
Structure
Focal point
Red spruce crowns with full conical outlines and slightly drooping branches standing along a meadow edge, silhouetted against a deep blue cloudless sky.
Picea rubens
Red spruce
Red spruce (Picea rubens) is the best-documented case of a tree damaged by air pollution anywhere in the world, and that is the honest headline rather than anything horticultural. Through the 1970s and 1980s, high-elevation stands across the Adirondacks, the Green Mountains and the central and southern Appalachians lost roughly a quarter to a half of their canopy trees. The mechanism took twenty years to pin down and turned out to be indirect: acid fog and mist leach calcium out of the needle cell membranes, and decades of acid deposition strip exchangeable calcium out of already-poor soils while mobilising aluminium that is toxic to fine roots. A calcium-starved needle loses cold tolerance, so the tree is killed not by the acid but by an ordinary winter it should have survived. The controlled proof came from Hubbard Brook in New Hampshire, where a watershed refertilised with calcium silicate in 1999 lost roughly a third as much current-year foliage as the untreated reference watershed in the severe winter-injury year of 2003, the reference losing about 75 per cent of it. The ending is genuinely good news, which is rare in this catalog: after the 1990 Clean Air Act Amendments cut utility sulphur dioxide by around forty per cent, more than three-quarters of monitored red spruce have been growing faster since about 2001. The second thing to know is that this is the tonewood - the Adirondack spruce of pre-war Martin guitars, still the premium soundboard for steel-string guitars, violin bellies and piano boards, and priced accordingly after mid-century overcutting. The third thing is the caveat the Lady Bird Johnson Wildflower Center states flatly: this species is not well suited to cultivation. It wants cool foggy montane summers, permanently moist acid ground and no lime, its roots sit in the top foot of soil so it blows over, and it is often defoliated by spruce budworm. Plant it because you are restoring an Appalachian or northeastern spruce forest, not because you want a garden conifer.
Tree
Full sun / Part shade
Consistent moisture
Zones 3a-6b
Climate: moderate
Structure
Subalpine firs with very narrow steeple crowns scattered across a green subalpine meadow, with lingering snowfields, bare rock and a cloud-covered peak behind them.
Abies lasiocarpa
Subalpine fir
Subalpine fir (Abies lasiocarpa) is the narrowest conifer in western North America and, for most gardens, the wrong tree. It is a timberline species: the US Forest Service silvical account puts its climate at a mean July temperature of 45 to 60°F, with more than 24 inches of precipitation of which much falls as snow, on ground that is frozen or under snow for a large part of the year. Bring it down the mountain into a hot summer, a humid one, or a polluted one and it sulks, thins and dies, and it does so slowly enough that people keep watering it. The Lady Bird Johnson Wildflower Center calls it a spire-like evergreen of 30 to 50 feet with stiff horizontal limbs branched to the ground, and that spire is the whole ornamental argument - a crown so narrow it can be a fifth as wide as it is tall, which is a snow-shedding adaptation rather than a nursery selection. At and above treeline it stops being a tree at all and grows as krummholz, low sprawling mats scoured by wind, and reproduces by LAYERING: a branch pressed into the ground roots and becomes a new stem, so a single tree can leave behind a ring of clones that mountaineers call an atoll. Two honest problems follow it down into cultivation. It is slow and, for a conifer, short-lived and structurally weak - thin bark, persistent dead branches, easily windthrown - and its pest list is serious: balsam woolly adelgid (Adelges piceae), introduced from Europe and the most destructive insect on this species in the Cascades, and the western balsam bark beetle (Dryocoetes confusus), which together with Armillaria root rot drives the mortality complex that has killed subalpine fir across large areas of the Rockies. Like every true fir it carries its cones UPRIGHT on the upper branches, dark purple ripening brown, and those cones never fall whole - they shatter on the tree and leave a bare central spike standing on the branch, which is the single quickest way to tell an Abies from a Picea at a glance.
Tree
Full sun / Part shade
Moderate water
Zones 3a-6b
Climate: moderate
Structure
Focal point
Future climate matches
Likely better as winters warm
4 plants
These plants are not the best current fit, but the mid-century projection moves this region toward their comfort range.

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.
Annabelle hydrangea (Hydrangea arborescens 'Annabelle') showing large white ball-shaped flower clusters on a rounded deciduous shrub.
Coral bells (Heuchera 'Marmalade') showing a low mound of ruffled coppery-orange foliage characteristic of the Heuchera villosa-derived hybrids.
Climate-resilient · 2 plants
Bright shade foundation
A part-shade planting with shrub structure and low foliage contrast.
Annabelle hydrangea
Coral bells
Switchgrass (Panicum virgatum) mature clump in the green growing season, its upright vase-shaped habit topped by the airy, diffuse open panicles diagnostic of the species.
Little bluestem (Schizachyrium scoparium) clumps in a garden bed, showing the species' upright, fine-textured blue-green vase-shaped growing-season habit.
Common milkweed (Asclepias syriaca) mature clump in flower, showing its stout upright reddish stems, broad opposite leaves, and pink-mauve flower umbels with young green pods.
A full clump of black-eyed Susan (Rudbeckia fulgida 'Goldsturm') in a garden bed, showing the dense mounded foliage base topped with golden, dark-centered daisies on branching stems.
+4
Climate-resilient · 8 plants
Climate-resilient natives for warming zones (eastern NA)
A pollinator-supporting palette of eastern North American natives with broad hardiness ranges and wide native distributions. Built for gardeners who want a planting that can handle warming zones without giving up wildlife value.
Switchgrass
Little bluestem
Common milkweed
Orange coneflower
Wild bergamot
Sweet Joe-Pye weed
Cutleaf coneflower
New England aster
A mature butterfly weed (Asclepias tuberosa) clump in a garden bed, showing its bushy mounded habit with several flat-topped orange umbels above a dense whorl of narrow leaves.
Common milkweed (Asclepias syriaca) mature clump in flower, showing its stout upright reddish stems, broad opposite leaves, and pink-mauve flower umbels with young green pods.
Purple coneflower (Echinacea purpurea) in bloom, showing pinkish-purple ray petals around a brown-domed central cone on an erect stem.
Wild bergamot (Monarda fistulosa) clump in an open meadow, its several upright square stems each topped by a ragged lavender flower head over toothed mint-family foliage.
+5
Climate-resilient · 9 plants
Native pollinator border (eastern US)
A continuous-bloom native pollinator strip for eastern North America. Covers spring through frost with host + nectar plants spanning monarchs, native bees, hummingbirds, and specialist Lepidoptera. Little bluestem provides the matrix grass + Hesperiidae host.
Butterfly weed
Common milkweed
Purple coneflower
Wild bergamot
Scarlet bee balm
Little bluestem
Sweet Joe-Pye weed
Swamp sunflower
Smooth blue aster
A mature oakleaf hydrangea (Hydrangea quercifolia) in flower - a broad, mounded multi-stemmed shrub studded with upright white panicles above coarse, deeply lobed oak-shaped leaves.
Woodland phlox (Phlox divaricata) showing five-petaled pale lavender-blue flowers on slender erect stems above a low spreading mat of foliage.
Wild columbine (Aquilegia canadensis) whole plant in rocky-ledge habitat, the airy blue-green compound foliage hung with nodding red-and-yellow spurred flowers.
Foamflower (Tiarella cordifolia) showing characteristic frothy white spring flower spikes above heart-shaped foliage.
+2
Climate-resilient · 6 plants
Part-shade woodland edge
A part-shade / bright-shade planting for morning sun or dappled light - eastern North American woodland-edge natives with spring bloom, season-long foliage, and a fern + shrub structure.
Oakleaf hydrangea
Woodland phlox
Wild columbine
Foamflower
Hairy alumroot
Christmas fern
English lavender (Lavandula angustifolia) as a broadly mounded, dense subshrub of fine silvery blue-green aromatic foliage.
Purple coneflower (Echinacea purpurea) in bloom, showing pinkish-purple ray petals around a brown-domed central cone on an erect stem.
A full clump of black-eyed Susan (Rudbeckia fulgida 'Goldsturm') in a garden bed, showing the dense mounded foliage base topped with golden, dark-centered daisies on branching stems.
Switchgrass (Panicum virgatum) mature clump in the green growing season, its upright vase-shaped habit topped by the airy, diffuse open panicles diagnostic of the species.
Climate-resilient · 4 plants
Sunny pollinator border
A durable sunny border with summer bloom, seedheads, and upright winter texture.
English lavender
Purple coneflower
Orange coneflower
Switchgrass
A green-season spicebush (Lindera benzoin) in its native woodland understory, showing the loose, open, multi-stemmed branching and alternate obovate leaves.
Wild ginger (Asarum canadense) - a clump rising from a mossy forest floor, paired heart-shaped leaves on fuzzy petioles arching over the maroon jug-shaped flowers nestled at ground level.
Bloodroot (Sanguinaria canadensis) showing characteristic white multi-petaled flower wrapped in a rounded leaf.
Virginia bluebells (Mertensia virginica) showing pendulous pink-to-blue bell-shaped flower clusters above smooth blue-green foliage.
+3
Currently suited · 7 plants
Shade & understory woodland
A full-shade woodland-floor community for deep shade beneath a closed canopy: an understory shrub, spreading groundcovers, spring ephemerals, and a large fern - eastern North American natives that expect low light and leaf-litter soil.
Northern spicebush
Wild ginger
Bloodroot
Virginia bluebells
Mayapple
Ostrich fern
Foamflower

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: 14
Host/specialist links: 4
Forage/pollination links: 19
Shelter links: 1
AD
AF
AL
AM
AM
AM
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: 14
Host/specialist links: 4
Forage/pollination links: 16
Shelter links: 1
AD
AF
AL
AL
AM
AM
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: 13
Host/specialist links: 4
Forage/pollination links: 17
Shelter links: 1
AD
AL
AM
AM
AM
AM

Similar planting regions

Browse other regions in the same biome. Their plant lists can suggest species and combinations worth comparing.
Chaparral-covered canyon slopes in Towsley Canyon, California.
RESOLVE 422 - Nearctic
California coastal sage and chaparral
California coastal sage and chaparral covers the cismontane lowlands and footslopes from Point Conception south through Baja California - the chaparral and coastal-sage-scrub matrix interleaved with oak woodland, riparian gallery forest, and the coastal salt-marsh fringe. The most species-rich Mediterranean-climate flora in North America; sage, ceanothus, manzanita, and the fire-following annual wildflowers carry the visible identity.
Mediterranean Forests, Woodlands & Scrub
Zones 8b-11a
+2.2°F by 2070
12,700 sq mi
Editorial profile
NNH tier 4
Montane chaparral-covered slopes in California.
RESOLVE 424 - Nearctic
California montane chaparral and woodlands
The California montane chaparral and woodlands ecoregion covers the higher mountains of southern and central California - the Transverse, Peninsular, and Coast Ranges, including the San Bernardino, San Gabriel, San Jacinto, Santa Monica, and Santa Lucia Mountains - with disjunct blocks in northern Baja California, Mexico. Its Mediterranean climate brings hot, dry summers and cool, wet winters, with mid-summer monsoonal thunderstorms that often form over the Transverse and Peninsular Ranges. Vegetation forms an elevation mosaic: chamise, manzanita, and scrub oak chaparral and oak woodlands give way upslope to pine and mixed-conifer forest and, on the highest peaks, subalpine communities. The region is notable for harboring eight endemic conifer species, and its flagship animal is the white-eared pocket mouse.
Mediterranean Forests, Woodlands & Scrub
Zones 8a-9a
+2.1°F by 2070
7,663 sq mi
NNH tier 3
Chaparral, grassland and a eucalyptus grove on ridges above Lucia in the Santa Lucia Range, California.
RESOLVE 425 - Nearctic
Santa Lucia Montane Chaparral & Woodlands
The Santa Lucia Montane Chaparral & Woodlands ecoregion hugs the Pacific coast along California's Santa Lucia Mountains, part of the Southern Coast Ranges, running from the Monterey Peninsula south through rugged Big Sur to areas west of Templeton. Moist western slopes support forests of coast redwood, Douglas-fir, ponderosa pine, and Monterey pine, while drier interiors carry chaparral and oak woodlands. The climate is Mediterranean, with cool, often foggy summers near the coast giving way to hot interior summers. Notably, the region holds the southernmost native stands of coast redwood and the endemic Santa Lucia fir, the rarest and most narrowly distributed fir in North America.
Mediterranean Forests, Woodlands & Scrub
Zones 9a-11a
+2.2°F by 2070
1,817 sq mi
NNH tier 3
Cape Sounion coastal scrub and rocky Aegean headland in Attica, Greece.
RESOLVE 785 - Palearctic
Aegean and Western Turkey sclerophyllous and mixed forests
The Aegean and Western Turkey sclerophyllous and mixed forests ring the Aegean Sea, spanning most of mainland Greece and the Aegean islands, the western coast of Turkey, and reaching into southeastern North Macedonia and southwestern Bulgaria. Its vegetation is classic Mediterranean: dense maquis shrubland of holm oak, strawberry tree, and bay laurel, extensive pine forests of Calabrian (Turkish) pine, Aleppo pine, and stone pine, with sweet chestnut and oriental beech on cooler northern slopes. The climate is Mediterranean, with mild winters and dry summers. The ecoregion's flagship is the oriental sweetgum (Liquidambar orientalis), endemic to a limited area of southwestern Turkey and the Greek island of Rhodes, and much of the original habitat has been heavily degraded by human activity dating back to ancient times. For gardeners drawn to drought-tolerant Mediterranean planting, native genera such as Arbutus (strawberry tree), Laurus (bay laurel), and the pines offer ornamental, climate-suited choices.
Mediterranean Forests, Woodlands & Scrub
Zones 8a-11a
+2.7°F by 2070
51,531 sq mi
NNH tier 4
African elephant cow and calf in flowering herb sward backed by dense thicket clumps, Addo, South Africa.
RESOLVE 88 - Afrotropic
Albany thickets
The Albany Thickets ecoregion lies in South Africa's Eastern Cape, concentrated in the wide valleys of the Great Fish, Sundays, and Gamtoos rivers around the Albany region. It forms a dense, spiny shrubland and woodland with a canopy up to about 2.5 metres tall, growing on well-drained sandy soils and rich in succulents such as the porkbush (Portulacaria afra), jade plant (Crassula ovata), aloes, and succulent Euphorbia, alongside trees like Schotia afra. The climate is dry, hot in summer and cold in winter, with inland valleys swinging from near 0 degrees C to over 40 degrees C and receiving low, irregular rainfall. The thickets form part of the Cape Floristic Region and are a noted center of endemism for succulent Euphorbia, while Addo Elephant National Park protects African bush elephants and black rhinoceros within the region. For gardeners, the spekboom (Portulacaria afra) and jade plant native here are both widely grown ornamental, drought-tolerant succulents.
Mediterranean Forests, Woodlands & Scrub
Zones 9b-11b
+2.1°F by 2070
14,181 sq mi
NNH tier 3
Mixed forest in Yedigoller National Park, Turkey.
RESOLVE 786 - Palearctic
Anatolian conifer and deciduous mixed forests
The Anatolian conifer and deciduous mixed forests cover the mountains and plateaus of southwestern Anatolia in Turkey, a transitional zone where Mediterranean conditions grade into increasingly continental climate moving from west to east. Its forests are a mosaic of pines and deciduous broadleaf trees: Turkish pine (Pinus brutia) holds the western foothills and inland depressions, while the emblematic Anatolian black pine (Pinus nigra ssp. pallasiana) dominates the drier east and higher elevations, mixing with oaks (Quercus cerris, Q. pubescens, Q. robur, Q. frainetto), sweet chestnut, Oriental beech, and juniper. The climate is broadly Mediterranean, with hot dry summers and rainy winters and annual precipitation ranging roughly 400 to 600 mm. The region shelters brown bears, grey wolves, Saker falcons, and the critically endangered long-legged wood frog, and its wetlands are vital for migratory waterfowl such as Dalmatian pelicans and white-headed ducks; it is classified as critical or endangered, with only a small fraction of its area protected. For gardeners, several plants native here are familiar ornamentals, including the cedar of Lebanon (Cedrus libani) and sweet chestnut.
Mediterranean Forests, Woodlands & Scrub
Zones 7a-9b
+2.8°F by 2070
33,325 sq mi
NNH tier 4

National refinement sub-regions

Within this RESOLVE ecoregion, national agencies recognise finer-grained sub-regions. Plotwright assigns each sub-region polygon to its containing RESOLVE polygon by centroid.
EPA Level III (US-only) - 1 sub-region
6 · Central California Foothills and Coastal Mountains
Source: USGS / EPA via Omernik (1987).

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.
States and provinces

Educator packet

Region packet
California interior chaparral and woodlands educator packet
The California interior chaparral and woodlands ecoregion forms an elliptical ring of hills and low mountains around California's Central Valley, stretching from Shasta Lake south toward Wheeler Ridge. Its biologically rich mosaic includes chaparral, grasslands, oak savannas and woodlands, serpentine communities, pine and montane conifer forests, riparian forests, and wetlands. The climate is Mediterranean, with warm, dry summers and mild, wet winters. Notably, it hosts the largest number of endemic mammals of any ecoregion in the U.S. and Canada, with the Alameda whipsnake as its flagship species; urban sprawl and rural development are leading threats.
Realm
Nearctic
Dominant biome
Mediterranean Forests, Woodlands & Scrub
Approximate area
27,780 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.). California interior chaparral and woodlands (California interior chaparral and woodlands). Retrieved 2026, August 20, from https://plotwright.com/regions/resolve-423
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
USDA Plant Hardiness Zone Map
Published hardiness-zone authority
One Earth
One Earth
Wikipedia
Wikimedia Foundation