Dry Chaco

Dry Chaco
The Dry Chaco is a vast semi-arid lowland in the heart of South America, spanning northwestern Argentina, western Paraguay, and southeastern Bolivia (extending into a small part of Brazil), east of the Andes. Its landscape is a mosaic of savanna and thorn forest, signatured by quebracho hardwoods-red quebracho (Schinopsis lorentzii) and white quebracho (Aspidosperma quebracho-blanco)-alongside the slow-growing palo santo (Bulnesia sarmientoi), prickly-pear and giant columnar cacti, and an understory of bromeliads. Lying in the rain shadow of the central Andes, it endures intense sun, a long dry season, and some of the highest temperatures on the continent, with rainfall roughly around 865 mm a year. The ecoregion is a stronghold of arid-land endemism-home to the once-thought-extinct Chacoan peccary and numerous armadillo species-but it is under heavy pressure, having lost an estimated 20.2% of its forest cover between 2000 and 2019 to ranching and cropland. For gardeners in hot, dry climates, the native algarrobo (Prosopis alba) is a prized shade tree well suited to such conditions.
RESOLVE 569
Neotropic
305,152 sq mi
Tropical & Subtropical Grasslands, Savannas & Shrublands
Landscape type
Tropical & Subtropical Grasslands, Savannas & Shrublands
Plant region
Neotropic
Region footprint
305,152 sq mi
Habitat pressure
Nature Could Reach Half Protected (Dinerstein NNH 2)
Use this as the broad planting pattern for the region: Warm grasslands and savannas where grasses dominate and trees are scattered, maintained by seasonal rainfall, grazing, and fire. They support large herbivore communities and respond sharply to wet–dry cycles. 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 538 of 538 climate-fit plants for this region.
Reliable climate fits
Good bets for now and later
519 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
19 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 regal lily (Lilium regale) stem carrying an umbel of white trumpet flowers and several unopened buds, all radiating from one point. The open flowers show yellow throats and orange anthers; the buds and the outside of the tepals are strongly flushed wine-purple, so the closed buds read almost entirely purple against the white of the open blooms. Narrow dark leaves clothe the stem below.
Lilium regale
Regal lily
Regal lily (Lilium regale) is the trumpet lily that actually works, and the two hard cautions come first because they are the ones that decide whether you should plant it. Every part of a true lily - tepals, leaves, stem, and the loose orange pollen that drops off the anthers onto a windowsill or a cut-flower table - causes acute kidney injury in cats, and the dose is small enough that grooming pollen off a coat has done it; in delayed cases the reported mortality runs from 50 percent to total. And Missouri Botanical Garden names the lily leaf beetle (Lilioceris lilii) outright in this species' problems list, which for gardeners across the northeastern United States and eastern Canada is now the defining fact of growing any Lilium at all. Past those two, the news is unusually good. Regal lily is the easiest and most forgiving of the trumpet lilies: strong 3-to-5-foot stems carrying up to 25 white trumpets 6 to 8 inches long, yellow in the throat and flushed purple outside, powerfully scented after dark. Missouri Botanical Garden records it as more drought tolerant than most lilies, it accepts limy ground that Oriental lilies refuse, and it is one of very few lilies genuinely worth raising from seed - sow it and you can have flowers in the second or third year, from a plant that carries none of the mosaic virus its sibling the tiger lily spreads. The whole garden population descends from one Sichuan valley. Ernest Henry Wilson found it above the Min River in 1903 and went back in 1910 for 6,000 bulbs; a landslide caught his sedan chair, broke his right leg in two places, and left him with a permanent limp he called his lily limp.
Perennial
Full sun / Part shade
Moderate water
Zones 4a-8b
Climate: moderate
Focal point
Border
Sneezewort (Achillea ptarmica) - upright clump-forming perennial in flower with loose, branched sprays of small button-like double white flower heads above narrow, linear, finely and sharply toothed dark-green leaves.
Achillea ptarmica
Sneezewort
Sneezewort (Achillea ptarmica) is a hardy, clump-forming herbaceous perennial grown for its loose, airy sprays of small, button-like white flower heads from June to August, carried above narrow, linear, finely and sharply toothed dark-green leaves on upright stems. POWO (Kew) gives its native range as across Europe and temperate Asia - from Britain, Ireland, and Scandinavia through central and eastern Europe to Japan, Kamchatka, Sakhalin, and the Kuril Islands - and it is introduced and naturalised widely across North America (much of the northeastern US and Canada, plus the Pacific Northwest), so in North America it is a garden escape rather than a native. RHS lists it as a fully hardy perennial (H7) for full sun and moist but well-drained soil, and it is hardy across roughly USDA zones 3a-9b. The honest caveat is its running, rhizomatous rootstock: the species form spreads at the root and can colonise a border, so it is best given room, a contained spot, or the double, largely-sterile cultivars such as the popular Pearl Group / "The Pearl", which give cleaner, fuller white pompoms (long used as a cut flower) but still travel at the root. Its leaves have a long folk history - chewed they give a numbing, Sichuan-pepper-like tingle, and the dried plant was used as a sneezing powder, the source of the names sneezewort and ptarmica - so it is a pungent, parts-edible herb rather than a salad green. It is a good, accessible nectar source for bees and hoverflies.
Perennial
Full sun / Part shade
Moderate water
Zones 3a-9b
Climate: moderate
Pollinator
Border
Filler

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
English lavender (Lavandula angustifolia) as a broadly mounded, dense subshrub of fine silvery blue-green aromatic foliage.
Rosemary (Salvia rosmarinus) showing dense needle-like aromatic foliage on woody branches.
Garden sage (Salvia officinalis) showing gray-green velvety foliage + spike of lavender summer flowers.
Oregano (Origanum vulgare) showing spreading mat of small aromatic leaves + pink-white flower clusters.
+2
Climate-resilient · 6 plants
Mediterranean drought-tolerant edible
A low-water edible palette of culinary herbs + a hardy grape for hot dry sunny sites. Mediterranean-origin plants thrive on neglect; their primary failure mode is overwatering, not underwatering.
English lavender
Rosemary
Garden sage
Oregano
Common thyme
Fox grape
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

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
AD
AF
AF
AF
AL
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: 12
Host/specialist links: 2
Forage/pollination links: 15
Shelter links: 0
AD
AF
AF
AL
AL
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: 21
Host/specialist links: 4
Forage/pollination links: 26
Shelter links: 3
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.
Honduras pine woodland in Mountain Pine Ridge Forest Reserve, Belize.
RESOLVE 564 - Neotropic
Belizian pine savannas
The Belizian pine savannas ecoregion lies almost entirely in Belize along the northwestern Caribbean coast, with only a few very small tracts reaching into neighboring Mexico and Guatemala. Its signature habitat is open savanna dominated by Caribbean pine (Pinus caribaea), woven into a mosaic that also includes calabash tree, white oak species, nanche, and everglades (Paurotis) palm, with closed pine forests in the premontane interior near the Maya Mountains. The climate is tropical monsoon (Koppen Am), warm through the year with a pronounced dry season and roughly 2,000 mm of annual rainfall in the wetter premontane zone. Fire shapes the landscape here: the Caribbean pine depends on periodic low-intensity wildfires to regenerate, and the savannas are the stronghold of the endangered yellow-headed Amazon parrot, now largely restricted to this region and adjacent parts of Mexico and Guatemala. For gardeners, several ornamental natives belong to this flora, including the calabash tree (Crescentia), nanche (Byrsonima crassifolia), and the everglades palm (Acoelorraphe).
Tropical & Subtropical Grasslands, Savannas & Shrublands
Zones 11b-12b
+1.6°F by 2070
1,093 sq mi
NNH tier 3
Aerial view of grassland and forest islands in the Beni savanna, Bolivia.
RESOLVE 565 - Neotropic
Beni savanna
The Beni savanna, also mapped as the Llanos de Moxos, is a tropical lowland savanna that lies in the southwestern Amazon basin, almost entirely within northern Bolivia's Beni Department, with small extensions into Brazil along the Iténez River and into Peru's Pampas del Heath. It forms a mosaic of seasonally flooded grassland and wetland threaded with forest islands and riverside gallery forest, where sedges and grasses give way to trumpet trees (Tabebuia ochracea), grugru palm, and stands of Attalea and Acrocomia palms in better-drained ground. The climate is tropical with a pronounced wet season from roughly December to May, when rains and snowmelt from the nearby Andes flood up to half the low-lying terrain for months at a time. It is one of South America's largest savanna complexes and the flagship home of the critically endangered, endemic blue-throated macaw (Ara glaucogularis), alongside hundreds of recorded bird species, though cattle grazing and seasonal burning press on its habitats. For gardeners, the showy native trumpet trees of the genus Tabebuia are familiar flowering ornamentals well suited to warm, seasonally wet climates.
Tropical & Subtropical Grasslands, Savannas & Shrublands
Zones 11b-12b
+3.0°F by 2070
48,669 sq mi
NNH tier 1
Rocky campos rupestres vegetation in the southern Serra do Espinhaco, Brazil.
RESOLVE 566 - Neotropic
Campos Rupestres montane savanna
The Campos Rupestres montane savanna is a high-elevation Brazilian ecoregion concentrated along the ancient Espinhaço Range, stretching from northern Bahia south through Minas Gerais, with scattered enclaves in the Chapada Diamantina, Serra da Canastra, and Serra do Caparaó. Known locally as "rock fields" (campo rupestre), it is a discontinuous mosaic of grasslands, shrublands, and quartzite rocky outcrops that threads through the Cerrado, Atlantic Forest, and Caatinga biomes, with vegetation dominated by the families Velloziaceae, Eriocaulaceae, Cyperaceae, and Poaceae. The climate brings dry winters and wet summers paired with strong winds and intense solar irradiance, and plants here grow on nutrient-poor, extremely shallow and acidic soils, adapting with waxy leaf coatings, protective hairs, and fire-resistant rolled leaves. It is an exceptional center of plant endemism-roughly 30 percent of its flora is found nowhere else, and within the Velloziaceae and Eriocaulaceae about 70 percent of species are endemic-yet it remains a threatened ecoregion, with only about 26 percent under protection against mining, eucalyptus plantations, and plant extraction. For gardeners, its rocky outcrops are a natural home to orchids and bromeliads adapted to lean, fast-draining substrates.
Tropical & Subtropical Grasslands, Savannas & Shrublands
Zones 10a-12b
+2.4°F by 2070
10,208 sq mi
NNH tier 1
Cerrado vegetation and rocky upland terrain in Parque dos Pireneus, Goias, Brazil.
RESOLVE 567 - Neotropic
Cerrado
The Cerrado is the largest and biologically richest savanna in South America, covering central Brazil and reaching into northeastern Paraguay and eastern Bolivia across plateaus generally between 500 and 1,700 meters in elevation. Rather than uniform grassland, it forms a shifting mosaic that grades from open campo through wooded savanna to the tall, nearly closed woodland known as cerradao, growing on nutrient-poor, well-drained soils and threaded with gallery forests; characteristic woody plants include the pequi tree, Qualea grandiflora, and the trumpet tree Tabebuia ochracea. Its climate is tropical and strongly seasonal, with a pronounced dry season during the southern winter, average annual rainfall of roughly 1,250 to 2,000 millimeters, and mean temperatures around 20 to 26 degrees Celsius. The region is extraordinarily diverse, holding on the order of 10,400 vascular plant species with endemism reaching about 50 percent among plants, and the maned wolf serves as its flagship animal. Much of the Cerrado has been converted to farmland, and the expansion of agribusiness, especially soybean cultivation, remains the primary threat to its native vegetation. For gardeners, the native Tabebuia trumpet trees are among the genera from this ecoregion already valued as flowering ornamentals.
Tropical & Subtropical Grasslands, Savannas & Shrublands
Zones 10a-13b
+2.9°F by 2070
742,127 sq mi
NNH tier 3
A wind-bent stand of coconut palms on the low coral rim of Clipperton Island, Pacific Ocean.
RESOLVE 568 - Neotropic
Clipperton Island shrub and grasslands
The Clipperton Island shrub and grasslands ecoregion is confined to a single tiny coral atoll administered by France, lying in the eastern Pacific roughly 965 kilometers southwest of mainland Mexico and recognized as the only coral island in that ocean. Its vegetation is sparse and low, dominated by spiny grass and thickets together with creeping morning glories (Ipomoea) and scattered groves of coconut palm, the cover often standing barely 30 centimeters high after land crabs repeatedly reset the plant community. The climate is tropical, with average temperatures between about 20 and 32 degrees Celsius and frequent tropical storms passing the island. Despite its bleak greenery, the atoll teems with life, supporting thousands of breeding seabirds, including the world's largest masked booby colony, alongside millions of the bright-orange Clipperton land crab that gives the ecoregion its flagship species. The atoll currently has no formal legal protection, leaving this isolated ecosystem reliant on its sheer remoteness.
Tropical & Subtropical Grasslands, Savannas & Shrublands
Zones 13b
+1.7°F by 2070
11 sq mi
NNH tier 4
Open savanna and gallery forest clumps below forested hills at the Gran Sabana, Venezuela.
RESOLVE 570 - Neotropic
Guianan savanna
The Guianan savanna spans the southern reaches of Venezuela, Guyana, and Suriname and the north of Brazil, covering rolling upland plains on the Guiana Shield between the Amazon and Orinoco basins and including the celebrated Gran Sabana. It is a mosaic of open grasslands and scrubby vegetation studded with isolated forest patches and gallery forests that thread along streams, with savanna grasses such as Trachypogon, Andropogon, and Axonopus, palm-dotted stretches of moriche palm (Mauritia flexuosa), and scrub genera including Clusia, Calliandra, and Chamaecrista. The climate is warm and tropical, with average temperatures around 20 degrees Celsius and annual rainfall generally between 2,000 and 3,000 millimeters. Despite their limited extent, these savannas are a plant-diversity hotspot: in Suriname the savanna patches cover only about one percent of the land yet hold some 800 plant species, roughly a fifth of the country's flora, and the ecoregion's flagship species is the critically endangered Rio Branco antbird. For gardeners, the region is the native home of ornamental genera such as the showy-flowered Calliandra and the stately moriche palm.
Tropical & Subtropical Grasslands, Savannas & Shrublands
Zones 12a-13b
+2.4°F by 2070
40,529 sq mi
NNH tier 1

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.

Educator packet

Region packet
Dry Chaco educator packet
The Dry Chaco is a vast semi-arid lowland in the heart of South America, spanning northwestern Argentina, western Paraguay, and southeastern Bolivia (extending into a small part of Brazil), east of the Andes. Its landscape is a mosaic of savanna and thorn forest, signatured by quebracho hardwoods-red quebracho (Schinopsis lorentzii) and white quebracho (Aspidosperma quebracho-blanco)-alongside the slow-growing palo santo (Bulnesia sarmientoi), prickly-pear and giant columnar cacti, and an understory of bromeliads. Lying in the rain shadow of the central Andes, it endures intense sun, a long dry season, and some of the highest temperatures on the continent, with rainfall roughly around 865 mm a year. The ecoregion is a stronghold of arid-land endemism-home to the once-thought-extinct Chacoan peccary and numerous armadillo species-but it is under heavy pressure, having lost an estimated 20.2% of its forest cover between 2000 and 2019 to ranching and cropland. For gardeners in hot, dry climates, the native algarrobo (Prosopis alba) is a prized shade tree well suited to such conditions.
Realm
Neotropic
Dominant biome
Tropical & Subtropical Grasslands, Savannas & Shrublands
Approximate area
305,152 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.). Dry Chaco (Dry Chaco). Retrieved 2026, August 20, from https://plotwright.com/regions/resolve-569
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
One Earth
One Earth
Wikipedia
Wikimedia Foundation