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Tropical & Subtropical Moist Broadleaf Forests

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Iquitos várzea

Biome

Tropical & Subtropical Moist Broadleaf Forests

Biogeographic realm

Neotropic

Fog over the river and flooded forest at Tamshiyacu-Tahuayo, Loreto, Peru.

Region photo - EdwinJs / Wikimedia Commons - CC BY-SA 4.0; attribution required.

Iquitos várzea

The Iquitos várzea is a seasonally flooded forest ecoregion of the western Amazon, spanning the low river basins of northeastern Peru, northwestern Brazil, and northern Bolivia along the upper Amazon, Ucayali, Marañón, and Madre de Dios rivers. Whitewater rivers carrying nutrient-rich Andean sediment inundate the forest by up to about 7 meters for much of the year, building fertile soils and a shifting mosaic of oxbow lakes, levees, grasslands, and forest in varied stages of succession. Mature stands on old alluvial terraces hold trees of the genera Ceiba, Eschweilera, Hura, Spondias, and Virola, and the region often carries large stands of buriti palm (Mauritia flexuosa), with a heliconia-, ginger-, and palm-rich understory. The climate is humid and equatorial, with annual rainfall of roughly 2,400 to 3,000 millimeters and average temperatures near 26 to 27 degrees Celsius. Its flagship species is the now-endangered Amazon river dolphin, and although the várzea supports rich mammal and bird diversity, only a small fraction is protected and it faces heavy pressure from deforestation, ranching, and mining. Gardeners may recognize native plants of horticultural interest here, including the vitamin-rich fruiting shrub camu-camu and the prized timber tree Spanish cedar (Cedrela odorata).

RESOLVE 469

Neotropic

44,423 sq mi

Tropical & Subtropical Moist Broadleaf Forests

Landscape type

Tropical & Subtropical Moist Broadleaf Forests

Plant region

Neotropic

Region footprint

44,423 sq mi

Habitat pressure

Nature Could Recover (Dinerstein NNH 3)

Source & care

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 14 of 14 climate-fit plants for this region.

Reliable climate fits

Good bets for now and later

14 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.

Persea americana

Avocado

A frost-tender broadleaf evergreen tree of the laurel family, native to Mexico and Central America and grown across the tropics and subtropics for its buttery, pear-shaped fruit. Glossy dark-green elliptic leaves 4 to 8 inches long clothe a tree that reaches 30 to 60 feet, hung with greenish-yellow flower panicles that give way to large single-seeded berries. Hardy only in USDA zones 10-12 - north of that it is an indoor curiosity easily sprouted from a pit, but one that rarely fruits.

Tree

Full sun / Part shade

Swietenia macrophylla

Bigleaf mahogany

The premier true mahogany and one of the most commercially important tropical hardwoods on Earth: a very large neotropical timber tree that reaches roughly 100 to 150 feet with a broad, spreading, rounded crown, pinnately compound leaves, and reddish-brown heartwood prized for fine furniture and instruments. Honesty first: this is a knowledge and conservation entry, not a plant most people can or should grow. It is a frost-tender tropical giant hardy only in USDA zones 10b-12b, native to the neotropics from southern Mexico through Central America into Amazonian South America, with no role as a temperate-garden ornamental. More important than any landscape use is its conservation status - decades of overharvest for that famous mahogany timber have made it conservation-sensitive, and it is listed on CITES Appendix II, meaning international trade is regulated to keep harvest from driving the species toward extinction. Include it for its story and its scale, and source any wood or plant material only through legal, certified, sustainable channels.

Broadleaf plantain is the broad-leaved, ground-hugging weed of lawns, paths, driveways, and roadsides across North America - and, honestly, an introduced Eurasian species, not a native. It forms a flat basal rosette of broad, strongly ribbed oval leaves that presses tight to the ground, sending up slender, erect, rat-tail flower spikes through summer. Its tie to human disturbance runs so deep that some Indigenous peoples called it 'white man's footprint,' because it followed colonists wherever soil was trodden bare. Despite the weedy reputation it is genuinely undervalued for habitat: the wind-pollinated spikes are heavy pollen sources, the ripe seed feeds finches and other small birds, and it is a documented larval host for the common buckeye butterfly. The young leaves are edible cooked or in salad, with a long medicinal and poultice history.

Herb

Full sun / Part shade

Cacao is the chocolate tree - a small evergreen understory tree of the lowland tropical rainforest, famous for being cauliflorous: its tiny pink-and-white flowers, and then the large ridged football-shaped pods, are borne directly on the trunk and oldest branches rather than out among the leaves. Reaching roughly 15 to 25 feet, it carries glossy oblong leaves that flush bronze when young. Each pod holds 30-40 seeds embedded in sweet white pulp; those seeds become chocolate only after fermenting, drying, and roasting (the cacau of Brazil). It is genuinely demanding - a true tropical, needing deep humid warmth and overhead shade and failing below about 50°F - so outside the wet tropics it is a greenhouse or conservatory plant only. Its flowers are pollinated not by bees but by tiny midges.

Schlumbergera x buckleyi

Christmas cactus

The true Christmas cactus - the hybrid Schlumbergera x buckleyi - a long-lived epiphytic holiday cactus grown indoors almost everywhere for its arching, segmented stems and its rose-to-magenta flowers that open in mid-winter, around Christmas. It is worth getting the identity right, because most plants sold and labeled as 'Christmas cactus' are actually the Thanksgiving cactus, Schlumbergera truncata. You can tell the two apart by the edges of the flat stem segments and by when they bloom: the true Christmas cactus has rounded, scalloped segment margins and flowers a few weeks later, in mid-winter, while the Thanksgiving cactus has sharp, claw-like teeth and blooms from late fall into early winter. Unlike a desert cactus, this is a forest epiphyte that grows on tree branches in the Atlantic coastal forest of southeastern Brazil, so it wants bright indirect light, a free-draining mix, sparing water, and - to set its buds - cool nights and short days. A reassuring point that sets it apart from many houseplants: it is non-toxic to cats and dogs. One more field mark clinches it: the true Christmas cactus has rose-pink pollen and flowers that hang almost regularly (radially), where the Thanksgiving cactus has yellow pollen and asymmetric blooms held out nearly horizontally.

A warm-season member of the nightshade family (Solanaceae) - a relative of tomato, potato, and pepper - grown for its showy, glossy edible berries that range from white and green through deep purple to nearly black depending on cultivar. The plant is technically a tender herbaceous perennial but is grown as an annual vegetable across most of North America, where it demands a long, hot, frost-free season to fruit well. Drooping violet star-shaped flowers give way to the familiar pendant fruit; the leaves, flowers, stems, and roots are toxic and only the fruit is eaten.

A tropical evergreen tree from the lowland rainforests of western and central Africa, grown almost everywhere else as a dramatic indoor specimen for its huge, glossy, fiddle- (or violin-) shaped leaves with bold sunken veins. In its native habitat it becomes a 40-foot tree, but as a houseplant or patio container plant it is typically kept to a single upright 6-15 foot trunk topped with a sculptural rosette of leaves. Winter-hardy only in the frost-free subtropics (USDA zones 10-12); everywhere colder it is a houseplant. It is famously fussy: it wants bright, steady light, even moisture, warmth, and - above all - to be left in one spot, dropping leaves in protest at cold drafts, moves, or erratic watering.

The true culinary ginger - a tropical-Asian herbaceous perennial grown for its aromatic, pungent, branched rhizome rather than its rarely-seen bloom. Reed-like pseudostems carry two-ranked lanceolate leaves to 2 to 4 feet, rising from a fleshy underground rhizome that is the kitchen and apothecary spice. Hardy outdoors only in USDA zones 9-12; in cooler regions it is grown as a warm-season annual or container plant and started from a fresh grocery-store rhizome each spring.

A fast, twining annual vine from tropical America grown for the azure-blue trumpets that open at dawn and fade by afternoon, each marked with a white-to-golden-yellow star throat. Heart-shaped leaves clothe stems that climb 8 to 10 feet in a single season on any support. Showy and easy from seed, but every part - especially the seed - is poisonous if eaten, so site it away from where pets and children graze.

A tender perennial from New Guinea grown almost everywhere in North America as a warm-season annual, prized for non-stop bright bloom in part shade - and, unlike common impatiens, in considerably more sun. It mounds 6 to 24 inches tall and 1.5 to 3 feet wide, carrying large, flat, five-petaled flowers in coral, salmon, pink, red, orange, lavender, and white above bold, often bronze-tinted dark foliage. Its real selling point is honest and practical: Impatiens hawkeri is resistant to impatiens downy mildew (Plasmopara obducens), the disease that collapsed plantings of Impatiens walleriana, making it the dependable shade-to-part-sun bedding plant where the common species can no longer be trusted.

Annual

Full sun / Part shade

Spathiphyllum wallisii

Peace lily

One of the most popular and forgiving foliage houseplants - an evergreen tropical perennial grown indoors for its glossy, dark-green, lance-shaped leaves and elegant white "flowers." Those flowers are not true showy blooms but a white leafy hood, the spathe, wrapped around a creamy spadix. POWO (Kew) places Spathiphyllum wallisii native to the tropical rainforests of Colombia and Venezuela; it is now grown worldwide as an indoor foliage plant. Honesty matters here. It is famously easy: it tolerates LOW light and conveniently droops when thirsty, then recovers after a watering. But every part contains insoluble calcium-oxalate crystals and is TOXIC to cats, dogs, and people if chewed, so keep it away from pets and small children. And its celebrated "air-purifying" reputation, from a 1989 NASA chamber study, is OVERSTATED - at realistic room densities the effect on indoor air quality is negligible. Grow it for its looks and easy care, not as an air purifier. RHS rates it frost-tender, H1B, a tender evergreen for shade and indoor culture under glass.

A bold tropical fig from South and Southeast Asia grown almost everywhere as a houseplant for its large, glossy, leathery, deep-green (or cream- and burgundy-variegated) paddle leaves. Honesty first: in its frost-free native habitat and outdoors in USDA zones 9-12 this is a massive strangler-type fig that can reach 50 to 100 feet with a spreading, aerial-rooting crown - but in the homes, offices, and patio containers where almost everyone grows it, it is kept a fraction of that size by pot confinement and pruning. It is easygoing in bright indirect light and forgiving of average indoor conditions; the one real catch is its milky latex sap, a mild skin, eye, and digestive irritant that also bothers latex-sensitive people. The same latex was historically tapped to make natural rubber, which is where the name comes from.

A large, spreading tropical tree from sub-Saharan Africa, famous for the enormous grey, sausage-shaped fruits that dangle on long cord-like stalks beneath its rounded crown. Honesty first: where it is hardy (USDA zones 10a-12b) it grows into a 30-60 foot evergreen-to-semi-deciduous shade tree, and at night it opens large, maroon, foul-smelling, cup-shaped flowers that are pollinated by bats. The fruits are the headline and the hazard - they can reach about 24 inches long and weigh several pounds, and a falling fruit can genuinely injure a person or dent a car, so it must never be sited over patios, walks, or parking. The raw fruit is toxic and purgative to humans; it is used only after careful processing in traditional medicine and skincare, never eaten raw. It is frost-tender and strictly a warm-climate specimen tree, not a temperate-garden plant.

A bold tropical aroid from the rainforests of southern Mexico through Panama, grown almost everywhere outside the frost-free tropics as a foliage houseplant. It is a climbing epiphyte: it sends adventitious aerial roots to scramble up tree trunks, and its huge glossy heart-shaped leaves develop the deep cuts and oval holes (fenestrations) that give it both common names. Mature plants in the tropics flower with a creamy aroid spathe and produce a cone-like fruit that is edible only when fully ripe. Indoors it rarely flowers and is prized purely for its dramatic, architectural foliage.

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: 0/5

Climate resilient: 5/5

Wildlife links: 6

Host/specialist links: 1

Forage/pollination links: 6

Shelter links: 0

Avocado - Climate-resilient Broadleaf plantain - Climate-resilient Eggplant - Climate-resilient Morning glory - Climate-resilient New Guinea impatiens - Climate-resilient

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: 4

Host/specialist links: 1

Forage/pollination links: 3

Shelter links: 0

Avocado - Climate-resilient Broadleaf plantain - Climate-resilient Cacao - Climate-resilient Christmas cactus - Climate-resilient Fiddle-leaf fig - Climate-resilient Ginger - Climate-resilient

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: 1

Host/specialist links: 0

Forage/pollination links: 1

Shelter links: 0

Avocado - Climate-resilient Bigleaf mahogany - Climate-resilient Cacao - Climate-resilient Fiddle-leaf fig - Climate-resilient Rubber plant - Climate-resilient Sausage tree - Climate-resilient

Similar planting regions

Browse other regions in the same biome. Their plant lists can suggest species and combinations worth comparing.

Atlantic forest canopy in Misiones Province, Argentina.

RESOLVE 439 - Neotropic

Alto Paraná Atlantic forests

The Alto Paraná Atlantic forests form the interior wing of South America's Atlantic Forest, sweeping inland from southern Brazil across eastern Paraguay and into Argentina's Misiones province, covering seven Brazilian states from Minas Gerais and São Paulo down to Rio Grande do Sul. The dominant habitat is Atlantic semi-deciduous forest, where emergent trees can reach about 35 meters and the canopy is built largely from the families Lauraceae, Apocynaceae, and Leguminosae, with many trees shedding leaves through the winter dry season. The climate is subtropical, receiving roughly 1,200 to 1,600 millimeters of rain per year, and the dry season from April through September brings frequent frosts. The region is a biodiversity stronghold, home to the endemic black lion tamarin, but it has been one of the most heavily cleared forests in the Neotropics, reduced by more than 90 percent of its original extent. For gardeners in mild subtropical climates, this is the native home of laurel- and legume-family trees adapted to a pronounced wet summer and dry, frost-prone winter.

Tropical & Subtropical Moist Broadleaf Forests

RESOLVE 440 - Neotropic

Araucaria moist forests

The Araucaria moist forests stretch across the highlands of southern Brazil, spanning the states of São Paulo, Paraná, Santa Catarina, and Rio Grande do Sul, and reaching into Misiones Province in northeastern Argentina. Their signature is the Brazilian araucaria (Araucaria angustifolia), a monkey puzzle conifer that rises in a tall emergent layer above a broadleaf canopy of laurel (Ocotea), myrtle, and legume trees such as Mimosa scabrella. Lying above roughly 500 metres on mountains and plateaus, the ecoregion has an oceanic, subtropical to temperate climate with no dry season, frequent winter frosts, and high annual rainfall. It shelters threatened and endemic wildlife including the brown howler monkey and the red-spectacled (red-spectacled amazon) parrot, yet much of the original forest has been cleared and only a small fraction is protected. For gardeners in suitably cool, frost-touched climates, the emblematic Araucaria angustifolia is itself a striking ornamental conifer native to this region.

Tropical & Subtropical Moist Broadleaf Forests

RESOLVE 441 - Neotropic

Atlantic Coast restingas

The Atlantic Coast restingas form a chain of coastal sand forests strung in well-defined enclaves along Brazil's Atlantic coast, running from the country's northeast to its southeast and from the tropics into the subtropics. These restingas grow on low-elevation plains of sandy, acidic, and nutrient-poor soils, supporting a five-to-fifteen-meter Atlantic forest of medium-sized trees and shrubs rich in the myrtle, legume, and spurge families, with vegetation ranging from low scrub to taller stands. Because the ecoregion stretches across a long latitudinal gradient, its climate shifts from tropical in the north to subtropical in the south. It shelters notable wildlife including the flagship red-tailed Amazon and the endemic Santa Cruz dwarf frog, yet the habitat has been reduced by more than 90 percent, with urban expansion the chief threat; surviving fragments are safeguarded in protected areas such as Jurubatiba Sandbank National Park.

Tropical & Subtropical Moist Broadleaf Forests

RESOLVE 442 - Neotropic

Bahia coastal forests

The Bahia coastal forests stretch along a roughly 150-kilometer-wide belt of eastern Brazil's Atlantic coast, spanning the states of Bahia and Espírito Santo from near the Itapicuru River south to the Itapemirim. They form part of the larger Atlantic Forest, with Atlantic evergreen moist and semi-deciduous broadleaf forests as the predominant vegetation, including several species of Inga, bambusoid grasses, and the Paissava palm growing on nutrient-poor yellow-red soils. The climate is hot and humid, with rainfall of about 1,200 to 1,800 millimeters spread fairly evenly through the year, though the southern reaches see a drier stretch from May through September. The ecoregion is extraordinarily rich in endemic plants, birds, primates, and butterflies and shelters threatened wildlife such as the maned three-toed sloth and the golden-headed lion tamarin, yet it has been reduced by roughly 95 percent of its original cover, making it one of the most endangered habitats in Brazil.

Tropical & Subtropical Moist Broadleaf Forests

RESOLVE 443 - Neotropic

Bahia interior forests

The Bahia interior forests stretch across eastern Brazil, spanning the states of Sergipe, Bahia, Minas Gerais, Espírito Santo, and Rio de Janeiro as the inland wing of the Atlantic Forest, set between the coastal forests and Brazil's drier interior. Their dominant cover is seasonal moist to semi-deciduous forest, with characteristic trees including Cavanillesia, mahogany, and many legumes, alongside lower-canopy vine forests known locally as mata de cipo. The climate is tropical and semi-humid, with average annual rainfall between roughly 1,000 and 1,750 mm, mean annual temperatures of about 18 to 22 degrees Celsius, and a marked dry season of three to five months. The region shelters notable endemics such as the Coimbra-Filho's titi monkey and the northern muriqui, and the Mata do Passarinho Reserve here harbors the Stresemann's bristlefront, described as the rarest bird on the planet. It is among the most fragmented ecoregions of the Atlantic Forest, with few remnants larger than 10 square kilometers and only a small fraction under formal protection. Gardeners may recognize the prized Brazilian rosewood (Dalbergia nigra), a threatened timber tree native to these forests.

Tropical & Subtropical Moist Broadleaf Forests

RESOLVE 444 - Neotropic

Bolivian Yungas

The Bolivian Yungas blanket the eastern Andean slopes of west-central Bolivia, reaching into a small portion of extreme southeastern Peru, where they form a transition zone between the Southwest Amazon moist forests below and the high Andean puna above. Spanning elevations from roughly 400 to over 3,500 metres, the ecoregion is a mosaic of montane cloud forest and other evergreen forest, with Chusquea bamboo characteristic of areas disturbed by landslides. Epiphytes are abundant, including bromeliads, orchids, and tree-ferns (Cyathea) draped across the canopy. Fog and rain carried in on the northern trade winds keep humidity and precipitation high, sustaining these cloud forests. This Neotropical moist broadleaf forest holds notably high endemism, sheltering range-restricted vertebrates alongside the spectacled bear, jaguar, and lowland tapir, and nearly half of it now lies within protected areas such as Madidi and Carrasco national parks.

Tropical & Subtropical Moist Broadleaf Forests

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

Brazil Peru

Educator packet

Region packet

Iquitos várzea educator packet

Realm

Neotropic

Dominant biome

Tropical & Subtropical Moist Broadleaf Forests

Approximate area

44,423 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.). Iquitos várzea (Iquitos várzea). Retrieved 2026, August 20, from https://plotwright.com/regions/resolve-469

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

Wikipedia

Wikimedia Foundation

Open source

Source guide