Mitchell Grass Downs

Mitchell Grass Downs
The Mitchell Grass Downs sweep across the northeastern interior of Australia, covering parts of central-west Queensland and the Northern Territory's Barkly Tableland. These are vast, mostly treeless rolling plains dominated by tussocky Mitchell grasses (Astrebla spp.), interrupted by scattered dry acacia woodlands of gidgee and stands of hardy eucalypts and paperbark, including red river gum and coolibah. The climate is tropical and semi-arid, with pronounced variation in seasonality and average annual rainfall ranging from about 350 to 750 millimetres, concentrated around the summer monsoon. After heavy rains, ephemeral lakes form and draw flocks of migratory waterbirds and shorebirds, and the region holds the largest range of the endangered night parrot, the elusive flagship species of these grasslands. For gardeners, the hardy eucalypts native here, such as the coolibah and red river gum, are well-suited landscape trees for hot, seasonally dry conditions.
RESOLVE 187
Australasia
182,736 sq mi
Tropical & Subtropical Grasslands, Savannas & Shrublands
Landscape type
Tropical & Subtropical Grasslands, Savannas & Shrublands
Plant region
Australasia
Region footprint
182,736 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 396 of 396 climate-fit plants for this region.
Reliable climate fits
Good bets for now and later
133 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.
Anise-scented sage (Salvia guaranitica) - close-up of deep violet-blue, two-lipped flowers with hooded upper lips and green calyxes among bright green leaves, photographed in cultivation at the Huntington Library, Art Museum, and Botanical Garden.
Salvia guaranitica
Anise-scented sage
Anise-scented sage is a tall, upright perennial in the mint family (Lamiaceae), native to Brazil, Paraguay, Uruguay, and Argentina. NC State Extension and Missouri Botanical Garden PlantFinder describe a bushy, square-stemmed plant 2 to 5 feet tall and wide that carries spikes of deep blue, two-lipped flowers with purple-blue calyxes from July into fall; NC State calls it a reliable nectar source for hummingbirds and butterflies, and notes that carpenter bees rob its nectar by biting a hole in the floral tube. The 'anise-scented' name is only partly earned: Wikipedia describes 'an anise scent when crushed,' but Missouri Botanical Garden PlantFinder says the bruised foliage has a very mild aroma with 'very little if any anise scent.' It spreads by tuberous roots that let it reproduce vegetatively (NC State Extension), so it fills a space rather than staying in a tidy clump. It is winter hardy only to about USDA zone 8a: farther north, grow it as an annual or overwinter cuttings indoors, though NC State notes the 'Black and Blue' cultivar is hardier and will survive milder zone 7 winters if well mulched. Neither NC State nor Missouri Botanical Garden documents an edible use or a toxicity hazard. NC State records, as ethnobotanical history, that the Guarani people of Brazil used it as a sedative; that is not a recommendation to take it, so treat it as a non-food ornamental. It has also naturalized outside South America (Wikipedia records it in New Zealand and Chile), so where winters are mild enough for it to persist outdoors, check your local weed or invasive-plant list before planting it.
Perennial
Full sun / Part shade
Moderate water
Zones 8a-10b
Climate: narrow
Border
Pollinator
Container
Good now, not later
Good now, less certain later
226 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.
Future climate matches
Likely better as winters warm
37 plants
These plants are not the best current fit, but the mid-century projection moves this region toward their comfort range.
Achiote (Bixa orellana): pale pink flowers and clusters of red, bristly seed capsules among broad green leaves of a lipstick tree on a spice farm on Zanzibar.
Bixa orellana
Achiote
Achiote, also sold as annatto or lipstick tree, is a fast-growing evergreen shrub or small tree native from Mexico through Central America to Colombia, Venezuela, the Guianas, Ecuador, Peru, Bolivia, Brazil, Paraguay, and northern Argentina, and planted across the tropics for its seeds. Clusters of pink or white flowers about 2 inches across, like single wild roses, open at the branch tips and are followed by clusters of red to red-brown capsules covered in soft bristles, which split open to show seeds coated in a waxy red-orange layer. That coating is annatto: the coloring and mild seasoning behind achiote paste and sazón, the yellow-orange of many cheeses, butters, and margarines, and the red body paint and lipstick that gave the plant its English name. In a garden it usually stays 6 to 12 feet tall and wide as a specimen or informal hedge, though as a tree it can reach 20 to 30 feet. It is frost-tender and needs a frost-free climate: it is hardy outdoors in USDA zones 10a-12b and grown elsewhere in a large container or conservatory that comes indoors before frost. Outside its native range it has naturalized on many Pacific islands, sparingly so in Hawaii, and in the Galapagos, where the Charles Darwin Foundation rates it potentially invasive.
Shrub
Full sun / Part sun
Consistent moisture
Zones 10a-12b
Climate: narrow
Focal point
Structure
Edible
Container
Copperleaf (Acalypha wilkesiana) - close-up of a shoot tip of broad, toothed leaves in coppery maroon and green, each edged in pinkish red, in a botanic conservatory in Fort Wayne, Indiana.
Acalypha wilkesiana
Copperleaf
Copperleaf (also called Jacob's coat or fire dragon plant) is a fast-growing tropical evergreen shrub from Fiji and neighboring islands of the South Pacific (Vanuatu, the Solomon Islands, the Bismarck Archipelago, and Tuvalu), grown almost everywhere else for its foliage. The species has large, broad, coarsely toothed leaves mottled coppery green and red; the pink, cream, gold, and ebony-purple leaf patterns sold in the trade belong to named cultivars such as 'Blackie', 'Bronze Pink', 'Java White', and 'Tricolor', not to the plain species described here. The flowers are tiny and insignificant, carried in slender catkin-like spikes on the same plant: long hanging male spikes and short female spikes that are often hidden among the leaves. It is frost-tender and reliably hardy only in USDA zones 10a-11b; everywhere colder it is grown as a warm-season annual or as a container plant brought indoors for winter. In a frost-free landscape it can reach 8 to 12 feet tall and 6 to 8 feet wide, though as a container or bedding plant it usually stays around 3 to 4 feet. Treat it as an irritant: the RHS lists the cultivar 'Obovata' as a skin and eye irritant and harmful if eaten. It is listed as introduced in Florida, Hawaii, and Puerto Rico, but UF/IFAS does not consider it a problem species in Florida at this time.
Shrub
Full sun / Part shade
Consistent moisture
Zones 10a-11b
Climate: narrow
Focal point
Container
Structure
Border

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: 9
Host/specialist links: 1
Forage/pollination links: 9
Shelter links: 0
AD
AF
AF
AN
AN
AN
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: 7
Host/specialist links: 1
Forage/pollination links: 7
Shelter links: 0
AD
AF
AL
AM
AN
AN
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: 7
Host/specialist links: 1
Forage/pollination links: 7
Shelter links: 0
AD
AN
AS
BA
BE
BO

Similar planting regions

Browse other regions in the same biome. Their plant lists can suggest species and combinations worth comparing.
Tropical savanna and sandstone outcrops in Kakadu National Park, Arnhem Land.
RESOLVE 181 - Australasia
Arnhem Land tropical savanna
The Arnhem Land tropical savanna covers the rugged Arnhem Land peninsula and its offshore islands, including the Tiwi Islands, Groote Eylandt, and the Wessel Islands, in Australia's Northern Territory. Eucalypt open forests dominate the landscape, led by Darwin stringybark (Eucalyptus tetrodonta) and Darwin woollybutt (Eucalyptus miniata) over a tall understory of Sorghum grasses, interspersed with monsoon rainforest patches, mangroves, and Melaleuca swamp forests. The climate is tropical and strongly monsoonal, with a summer wet season and a largely rainless dry season. Long isolation has made it exceptionally diverse: over 1,900 plant taxa have been recorded, at least 200 of them found nowhere else, and a 2017 assessment found that 36% of the ecoregion lies within protected areas such as Kakadu National Park.
Tropical & Subtropical Grasslands, Savannas & Shrublands
Zones 11b-13b
+2.5°F by 2070
61,266 sq mi
NNH tier 2
Expansive panoramic landscape view from Mook Mook lookout across the sandstone plateau and ridges of Blackdown Tableland National Park in central Queensland, overlooking the Brigalow Belt country.
RESOLVE 182 - Australasia
Brigalow tropical savanna
The Brigalow Tropical Savanna stretches across inland Queensland and into northern New South Wales, Australia, forming a broad transition belt nearly eleven degrees of latitude long between the wetter coastal forests of the east and the semi-arid interior. It is named for the brigalow (Acacia harpophylla), a water-stress-tolerant acacia that dominates the heavy clay soils, intergrading with eucalypt woodlands such as ironbark and poplar box, cypress pine (Callitris glaucophylla) on sandier ground, bluegrass (Dichanthium) grasslands, and scattered Queensland bottle trees (Brachychiton). The climate shifts from warm tropical summer-rainfall conditions in the north to cooler-wintered south, with the dry interior receiving under 500 mm a year and coastal margins 750 mm or more. Over 400 bird species occur here, and the region shelters endangered mammals including the flagship bridled nail-tail wallaby and the northern hairy-nosed wombat, though extensive clearing for grazing and cropping has left it critically threatened. For gardeners in comparable warm, seasonally dry climates, the native cypress pine and the sculptural bottle tree are both established ornamentals.
Tropical & Subtropical Grasslands, Savannas & Shrublands
Zones 9b-11b
+2.6°F by 2070
158,394 sq mi
NNH tier 2
Gallery forest reflected in the still Coleman River at dusk, Cape York Peninsula, Queensland.
RESOLVE 183 - Australasia
Cape York Peninsula tropical savanna
The Cape York Peninsula tropical savanna covers the northern portion of Cape York Peninsula in Queensland, Australia, along with the adjacent Torres Strait Islands, bounded by the Coral Sea to the east and the Gulf of Carpentaria to the west. Eucalypt woodlands and savannas form the dominant cover, with Darwin stringybark (Eucalyptus tetrodonta) the most widespread tree, while low open woodlands of Melaleuca, patches of rainforest and vine thicket, heathlands, and extensive mangroves round out the habitat mosaic. The climate is tropical and monsoonal, with a dry season from May to October and a heavy monsoon from November to April, and rainfall rising from the drier south toward the wetter north. Once linked by land to New Guinea, the peninsula's varied habitats support an exceptionally rich biota, including a large share of Australia's frogs, reptiles, mammals, and birds, with the Cape York birdwing butterfly as its flagship species and birds such as the golden-shouldered parrot and palm cockatoo. For gardeners, the region is the native home of distinctive endemic palms in the genera Wodyetia and Normanbya and an unusually diverse native orchid flora.
Tropical & Subtropical Grasslands, Savannas & Shrublands
Zones 11b-13a
+2.7°F by 2070
47,500 sq mi
NNH tier 2
Open tropical savanna woodland and rocky escarpment at Riversleigh, Australia.
RESOLVE 184 - Australasia
Carpentaria tropical savanna
The Carpentaria tropical savanna sweeps across the depositional plains south of the Gulf of Carpentaria in northern Australia, spanning northwestern Queensland's Gulf Country and the northeastern Northern Territory, and taking in the Wellesley and Pellew Islands. Open eucalypt woodlands dominate the landscape, with Darwin stringybark (Eucalyptus tetrodonta) and bloodwoods rising over spinifex hummock grasses, while bluegrass (Dichanthium) grasslands blanket the clay plains and Melaleuca woodlands and mangroves fringe the wetter coast. The climate is strongly monsoonal, with summer rains arriving roughly November through March followed by a long dry season. The region is home to the endemic Carpentarian rock-rat (Zyzomys palatalis), and its coastal mudflats are a critical stopover for thousands of migratory shorebirds on the East Asian-Australasian Flyway.
Tropical & Subtropical Grasslands, Savannas & Shrublands
Zones 10b-12a
+2.7°F by 2070
141,808 sq mi
NNH tier 2
Einasleigh upland savanna and volcanic crater terrain in northern Queensland.
RESOLVE 185 - Australasia
Einasleigh upland savanna
The Einasleigh upland savanna covers a large inland plateau in tropical and subtropical Queensland, Australia, just inland of the moist coast atop ancient eroded volcanic rocks with some of the world's longest lava flows and tubes. Its basalt-derived soils support ironbark eucalyptus woodlands, interspersed with patches of dry rainforest and many distinct wetland types. The climate is drier and cooler than the nearby coast, with summer highs around 35 degrees Celsius and a wet season running from December to March. The endemic golden-shouldered parrot lives here, alongside near-endemic rock-wallabies such as Godman's and Mareeba rock-wallabies, yet only about 7 percent of the ecoregion is protected and grazing, mining, and invasive weeds like lantana and rubber vine continue to degrade habitat. For gardeners, the region's signature ironbark eucalypts are the characteristic native trees of this hardy upland savanna.
Tropical & Subtropical Grasslands, Savannas & Shrublands
Zones 10b-11b
+2.8°F by 2070
45,028 sq mi
NNH tier 2
Red pindan sand track between acacia scrub and a white-barked gum near Broome, Western Australia.
RESOLVE 186 - Australasia
Kimberly tropical savanna
The Kimberley tropical savanna spans the rugged northwest of Australia, reaching across the Kimberley region of Western Australia and into the Northern Territory south of the Timor Sea. Savanna and open woodland dominate, with bloodwood eucalypts (Corymbia species) alongside Darwin stringybark (Eucalyptus tetrodonta) and Darwin woollybutt (E. miniata) over a grassy understorey of Sorghum, Themeda, and Aristida, while the iconic, swollen-trunked boab (Adansonia gregorii) is a signature tree of the country. The climate is monsoonal and tropical, with high temperatures year-round and rainfall concentrated in the summer monsoon from October to March, followed by a long dry season. More than 2,000 plant species grow here, of which about 230 are endemic, and scattered patches of monsoon rainforest shelter many ancient Gondwanan plants; the golden bandicoot is the region's flagship species. For gardeners, the boab stands out as a distinctive drought-adapted native of this country.
Tropical & Subtropical Grasslands, Savannas & Shrublands
Zones 11a-12b
+2.7°F by 2070
131,155 sq mi
NNH tier 2

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

Educator packet

Region packet
Mitchell Grass Downs educator packet
The Mitchell Grass Downs sweep across the northeastern interior of Australia, covering parts of central-west Queensland and the Northern Territory's Barkly Tableland. These are vast, mostly treeless rolling plains dominated by tussocky Mitchell grasses (Astrebla spp.), interrupted by scattered dry acacia woodlands of gidgee and stands of hardy eucalypts and paperbark, including red river gum and coolibah. The climate is tropical and semi-arid, with pronounced variation in seasonality and average annual rainfall ranging from about 350 to 750 millimetres, concentrated around the summer monsoon. After heavy rains, ephemeral lakes form and draw flocks of migratory waterbirds and shorebirds, and the region holds the largest range of the endangered night parrot, the elusive flagship species of these grasslands. For gardeners, the hardy eucalypts native here, such as the coolibah and red river gum, are well-suited landscape trees for hot, seasonally dry conditions.
Realm
Australasia
Dominant biome
Tropical & Subtropical Grasslands, Savannas & Shrublands
Approximate area
182,736 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.). Mitchell Grass Downs (Mitchell Grass Downs). Retrieved 2026, October 9, from https://plotwright.com/regions/resolve-187
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