The Snake-Columbia shrub steppe is a vast arid ecoregion stretching across the Columbia Basin of Washington, southeastern Oregon, northern Nevada, extreme northeastern California, southern Idaho, and a small part of western Wyoming. Its landscape of basins, playas, and wetlands punctuated by steep fault-block mountains is dominated by big sagebrush and perennial grasses such as bluebunch wheatgrass and Idaho fescue, with western juniper woodlands and a biological soil crust of lichens, fungi, and cyanobacteria. Summers are warm to hot and winters cold, with limited precipitation that varies sharply by rain shadow. The greater sage-grouse is the flagship species; major threats include livestock grazing, juniper expansion from fire exclusion, and cheatgrass invasion that has made wildfires unnaturally frequent.
RESOLVE 434
Nearctic
74,457 sq mi
Deserts & Xeric Shrublands
Landscape type
Deserts & Xeric Shrublands
Plant region
Nearctic
Region footprint
74,457 sq mi
Habitat pressure
Nature Could Reach Half Protected (Dinerstein NNH 2)
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Use this as the broad planting pattern for the region: Arid and semi-arid lands where low, erratic rainfall and high evaporation limit vegetation to drought-adapted shrubs, succulents, and sparse grasses. Day-to-night temperature swings are large, and life is finely tuned to water scarcity. For garden decisions, pair that context with the plant list below, then narrow by your site's light, water, soil, and mature-size constraints.
°C
°F
Range & origins
Marker placed inside the RESOLVE 2017 polygon at 42.7°N, 116.4°W.
Region through time
Modern footprint
RESOLVE 2017 maps 74,457 sq mi
This boundary is a modern ecological footprint for Snake-Columbia shrub steppe, not a permanent line on the planet. It is useful for today's plant and wildlife context because it follows recurring vegetation, climate, landform, and disturbance patterns.
Why here
deserts & xeric shrublands conditions
The region sits in the Nearctic realm and is classed as deserts & xeric shrublands. Elevation, moisture, fire, soils, coasts, and human land use can all make the real landscape more varied than a single map color suggests.
Change pressure
Nature Could Reach Half Protected
Plotwright shows this as the current RESOLVE footprint. Over decades to centuries, warming, disturbance, invasive species, land use, and restoration can move the living edge of a region even when the reference map stays fixed.
Climate zones
USDA zone range (now)
5a-7b
USDA
What seed packets and nursery tags reference. Coldest-day survival semantics.
Plotwright projection (2041–2070)
8a-9b
Plotwright
Where the winter climate trajectory points by mid-century.
Heat zones
Loading AHS heat-zone data for this region marker point...
Average warming this ecoregion is on track for: +4.9°F by mid-century. Current-trajectory scenario · climate data sampled across 10 of 10 points within this ecoregion's bounding box.
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 329 of 329 climate-fit plants for this region.
Reliable climate fits
Good bets for now and later
314 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.
Yucca filamentosa
Adam's needle
A virtually stemless, broadleaf-evergreen native of central and eastern North America: a basal rosette of rigid, sword-shaped, spine-tipped leaves up to 30 inches long, fringed along the margins with the curly white threads that give the species its name. In early summer a flowering stalk shoots from the center to 5-8 feet, carrying nodding, bell-shaped, creamy-white flowers. Tough enough for poor sandy soil, heat, drought, and salt spray, it earns its keep as architectural structure in dry and seaside gardens.
Shrub
Full sun / Part shade
Low water
Zones 5a-10b
Climate: broad
+5
Shrub
Full sun / Part shade
Low water
Zones 5a-10b
Climate: broad
Structure
Focal point
Border
+3
Structure
Focal point
Border
Tagetes erecta
African marigold
A tall, bold warm-season annual from Mexico and Guatemala (the "African" name is a misnomer of its European garden history) grown for large, fully double, pompon-like flowerheads in saturated yellow, gold, and orange over strongly aromatic, finely divided foliage. Plants reach 12-48 inches and bloom from early summer to frost in full sun. The petals are edible and used as a culinary garnish and natural dye, and the flowers are the iconic "flor de muerto" of Mexican Day of the Dead. Despite the wide listed zone range it is frost-tender and grown for a single warm season.
Annual
Full sun / Part shade
Low water
Zones 2a-11b
Climate: moderate
+5
Annual
Full sun / Part shade
Low water
Zones 2a-11b
Climate: moderate
Border
Focal point
Container
Pollinator
+4
Border
Focal point
Container
Pollinator
Rubus allegheniensis
Allegheny blackberry
A native eastern + central North American thicket-forming shrub producing arching thorny canes + clusters of large sweet black berries in mid-to-late summer. Among the most important wildlife fruit producers in eastern forests — birds, mammals, + insects all depend on the fruit. Like raspberry, biennial-caned (primocane year 1, fruits in year 2 as floricane, then dies back). Spreads via root suckers + tip-rooting cane tips; manage with annual pruning.
Shrub
Full sun / Part sun
Moderate water
Zones 3a-8b
Climate: broad
+5
Shrub
Full sun / Part sun
Moderate water
Zones 3a-8b
Climate: broad
Edible
Pollinator
Structure
+3
Edible
Pollinator
Structure
Pachysandra procumbens
Allegheny spurge
A native Southeastern North American semi-evergreen woodland groundcover (Pachysandra procumbens), prized for its blue-green to bronze mottled leaves and fragrant white-to-pinkish bottlebrush flower spikes that open at ground level in late winter to early spring. Unlike the widely planted invasive Asian Pachysandra terminalis, this native spreads slowly by rhizomes into well-behaved clumping colonies, making it a low, restrained groundcover for shaded native plantings.
Perennial
Part shade
Consistent moisture
Zones 5a-9b
Climate: moderate
+5
Perennial
Part shade
Consistent moisture
Zones 5a-9b
Climate: moderate
Border
Filler
+2
Border
Filler
Thuja occidentalis
American arborvitae
A dense, conical-to-narrow-pyramidal evergreen tree native to eastern and central North America, prized as a screening and foundation conifer. Flat, fan-like sprays of scale-like, aromatic yellow-green foliage clothe the tree from the ground up, and red-brown bark exfoliates on mature trunks. Wild trees can reach 40-60 feet but cultivated plants typically stay near 20-30 feet; small urn-shaped cones and dense evergreen cover make it valuable food and shelter for birds.
Tree
Full sun / Part sun / Part shade
Consistent moisture
Zones 2a-7b
Climate: broad
+5
Tree
Full sun / Part sun / Part shade
Consistent moisture
Zones 2a-7b
Climate: broad
Structure
Focal point
Border
+3
Structure
Focal point
Border
Tilia americana
American basswood
A medium-to-large native shade tree of central and eastern North America, reaching 50-80 feet with an ovate-rounded crown and large, asymmetric heart-shaped leaves. In June it carries pale-yellow, intensely fragrant flowers on pendulous cymes — each cluster hung from a distinctive strap-like leafy bract — that ripen into pea-sized nutlets. The fragrant June bloom is a premier nectar source: Missouri Botanical Garden lists it as attracting bees and butterflies, and the Lady Bird Johnson Wildflower Center flags it as having special value to both native and honey bees.
Tree
Full sun / Part sun / Part shade
Moderate water
Zones 2a-8b
Climate: broad
+5
Tree
Full sun / Part sun / Part shade
Moderate water
Zones 2a-8b
Climate: broad
Structure
Focal point
Pollinator
+3
Structure
Focal point
Pollinator
Castanea dentata
American chestnut
Once the dominant canopy hardwood of the eastern United States forest — an estimated four billion trees, prized for fast growth, rot-resistant timber, and an enormous annual crop of sweet edible nuts that fed people, livestock, and wildlife alike. In the early 1900s an introduced Asian fungus, chestnut blight (Cryphonectria parasitica), swept through and functionally destroyed it: by the 1950s the species was effectively extinct as a mature forest tree. Surviving root systems still send up sprouts from old stumps, but the blight almost always girdles and kills them before they can grow large enough to flower and reproduce. The honest reality for a gardener is that you cannot reliably grow a mature wild-type American chestnut today. The realistic paths are blight-resistant backcross hybrids from The American Chestnut Foundation or transgenic blight-tolerant lines still being deployed — not a pure wild seedling, which the blight will almost certainly kill.
Tree
Full sun / Part shade
Moderate water
Zones 5a-8b
Climate: narrow
+5
Tree
Full sun / Part shade
Moderate water
Zones 5a-8b
Climate: narrow
Structure
Focal point
Edible
+3
Structure
Focal point
Edible
Sambucus canadensis
American elderberry
A fast, suckering native shrub of streambanks and moist thickets across eastern North America, grown for huge flat-topped cymes of tiny lemon-scented white flowers in early summer and the clusters of dark elderberry drupes that follow. Spreads by root suckers into naturalized colonies 5-12 feet tall and wide; the flowers feed butterflies and the showy fruit feeds birds. The raw berries are not eaten fresh — they are cooked into jelly, pie, and wine.
Shrub
Full sun / Part sun / Part shade
Consistent moisture
Zones 3-9
Climate: broad
+5
Shrub
Full sun / Part sun / Part shade
Consistent moisture
Zones 3-9
Climate: broad
Structure
Edible
Pollinator
Focal point
+4
Structure
Edible
Pollinator
Focal point
Teucrium canadense
American germander
American germander, also called wood sage, is a widespread North American native perennial in the mint family that runs steadily underground on creeping rhizomes. From early to midsummer it sends up erect, softly hairy stems topped with one-sided spikes of pale pink-to-lavender flowers, each with the distinctive deeply lobed lower lip that gives the germanders their look and makes a generous landing platform for bees. It is a plant of moist open ground - wet meadows, streambanks, ditches, and the edges of thickets - across most of the contiguous United States into southern Canada, which tells you exactly what it wants: sun and a soil that does not dry out. The honest caveat is its vigor: those same rhizomes that fill a bank or a rain garden so readily will also colonize a tidy perennial border and crowd politer neighbors. Site it where it can run, or give it a root barrier, and it rewards you with a long, dependable bee-friendly bloom rather than a maintenance fight.
Perennial
Full sun / Part shade
Consistent moisture
Zones 4a-9b
Climate: moderate
+5
Perennial
Full sun / Part shade
Consistent moisture
Zones 4a-9b
Climate: moderate
Pollinator
Filler
+2
Pollinator
Filler
Corylus americana
American hazelnut
A rounded, multi-stemmed deciduous shrub native across eastern and central North America, grown for its edible nuts and its season-opening catkins. Showy 2-3 inch yellowish-brown male catkins dangle from bare branches in early spring before the ovate, double-toothed leaves emerge; small egg-shaped edible nuts ripen inside leafy husks by mid- to late summer. Easygoing in average soil and tolerant of clay and black walnut, it suckers into thickets that screen and shelter wildlife.
Shrub
Full sun / Part sun / Part shade
Moderate water
Zones 4a-9b
Climate: broad
+5
Shrub
Full sun / Part sun / Part shade
Moderate water
Zones 4a-9b
Climate: broad
Structure
Edible
Pollinator
+3
Structure
Edible
Pollinator
Ilex opaca
American holly
The only native U.S. holly with both spiny green leaves and bright red berries — an upright, pyramidal, broadleaf evergreen tree that slowly matures to 15-30 feet in cultivation (to 50 feet in the wild). Thick, leathery, deep green leaves bear spiny marginal teeth, and pollinated female trees carry showy red-to-orange drupes that ripen in fall and persist through winter as bird food. This is the classic "Christmas holly" of wreaths and decorations.
Tree
Full sun / Part sun / Part shade
Consistent moisture
Zones 5a-9b
Climate: broad
+5
Tree
Full sun / Part sun / Part shade
Consistent moisture
Zones 5a-9b
Climate: broad
Focal point
Structure
Pollinator
+3
Focal point
Structure
Pollinator
Ostrya virginiana
American hophornbeam
A small-to-medium understory tree of dry, rocky eastern-North-American woods, named for its drooping clusters of papery, sac-like seed pods that resemble the fruit of hops. The birch-like, sharply-serrated leaves turn an undistinguished yellow in fall, and reddish-brown male catkins persist on the bare branches through winter. Also called ironwood for its extremely hard, dense wood; tough, low-maintenance, and drought-tolerant once established.
Tree
Full sun / Part shade
Moderate water
Zones 3a-9b
Climate: broad
+5
Tree
Full sun / Part shade
Moderate water
Zones 3a-9b
Climate: broad
Structure
Focal point
+2
Structure
Focal point
Diospyros virginiana
American persimmon
A tough, medium-sized native tree of the eastern and midwestern United States, grown as much for its showy edible orange fruit as for its distinctive thick, dark gray bark broken into rectangular blocks. Small urn-shaped white-to-greenish-yellow flowers open in May and June, and the sweet fruit ripens after frost. Largely dioecious — a female tree needs a male pollinizer nearby to set fruit — and notably drought- and walnut-tolerant once established.
Tree
Full sun / Part sun / Part shade
Moderate water
Zones 4a-9b
Climate: broad
+5
Tree
Full sun / Part sun / Part shade
Moderate water
Zones 4a-9b
Climate: broad
Focal point
Structure
Edible
Pollinator
+4
Focal point
Structure
Edible
Pollinator
Prunus americana
American plum
A small native deciduous tree (or thicket-forming, suckering shrub) of eastern and central North America, grown for clouds of fragrant white 5-petaled flowers that open in March before the leaves and for the edible red plums that follow in early summer. It forms a broad, spreading crown with attractive dark reddish-brown twigs that sometimes carry thorny lateral branchlets. A documented larval host for swallowtails and other butterflies, with flowers of special value to native, bumble, and honey bees.
Tree
Full sun / Part shade
Low water
Zones 3a-8b
Climate: broad
+5
Tree
Full sun / Part shade
Low water
Zones 3a-8b
Climate: broad
Focal point
Structure
Pollinator
+3
Focal point
Structure
Pollinator
Rubus idaeus
American red raspberry
A native bramble (cane) producing red aromatic edible fruit in summer or fall (depending on summer-bearing vs everbearing cultivar). Self-pollinating; spreads vigorously by root suckers + tip-rooting canes. NC State documents extensive Lepidoptera + small mammal + bird wildlife value alongside the edible fruit role. Site where the spreading habit is welcome — naturalized colonies form in sun-exposed open ground.
Shrub
Full sun
Moderate water
Zones 4a-8b
Climate: broad
+5
Shrub
Full sun
Moderate water
Zones 4a-8b
Climate: broad
Edible
+1
Edible
Liquidambar styraciflua
American sweetgum
A native canopy tree of eastern North American forests with iconic star-shaped 5-lobed leaves displaying outstanding red-purple-orange fall color, distinctive corky wing-bark on twigs, and spiky round seed pods that famously litter lawns ("gumballs"). The seed pods are the design-defining drawback — Liquidambar is rarely planted in formal landscapes for this reason. Choose seedless cultivars ('Rotundiloba', 'Slender Silhouette') for residential planting.
Tree
Full sun
Moderate water
Zones 5a-9b
Climate: broad
+5
Tree
Full sun
Moderate water
Zones 5a-9b
Climate: broad
Focal point
Structure
+2
Focal point
Structure
Platanus occidentalis
American sycamore
A massive native deciduous canopy tree of eastern North American floodplain forests producing distinctive mottled white-tan-gray exfoliating bark (the design-defining trait — sycamore bark looks like military camouflage), large palmate maple-like leaves, and persistent spherical seed balls. Among the largest deciduous trees in eastern North America — old-growth specimens exceed 150 feet tall + 10 feet trunk diameter. Site only where massive scale is acceptable.
Tree
Full sun / Part shade
Consistent moisture
Zones 4a-9b
Climate: broad
+5
Tree
Full sun / Part shade
Consistent moisture
Zones 4a-9b
Climate: broad
Focal point
Structure
+2
Focal point
Structure
Agastache foeniculum
Anise hyssop
An upright, clump-forming perennial of the mint family native to the upper Midwest, Great Plains, and into central Canada, named for its anise-scented foliage. From June through September it carries dense terminal spikes of lavender-to-purple two-lipped flowers above square stems and opposite, toothed leaves. The Lady Bird Johnson Wildflower Center flags it as a nectar source with special value to native bees, bumble bees, and honey bees, and it also draws butterflies and hummingbirds.
Perennial
Full sun / Part shade
Moderate water
Zones 4a-8b
Climate: moderate
+5
Perennial
Full sun / Part shade
Moderate water
Zones 4a-8b
Climate: moderate
Pollinator
Border
Edible
+3
Pollinator
Border
Edible
Hydrangea arborescens
Annabelle hydrangea
A native eastern-US deciduous shrub — 'Annabelle' is a sterile-flowered cultivar of smooth hydrangea — with very large white snowball blooms in summer. Blooms on new wood so spring frost cannot destroy the flower display, and serves as the larval host for the hydrangea sphinx moth.
Shrub
Part sun / Part shade
Consistent moisture
Zones 3a-9b
Climate: broad
+5
Shrub
Part sun / Part shade
Consistent moisture
Zones 3a-9b
Climate: broad
Focal point
Structure
+2
Focal point
Structure
Malus domestica
Apple
The domesticated orchard apple — a deciduous Rosaceae tree grown for its showy, edible fruit and fragrant April blossom of five white-to-pink petals around a ring of yellow stamens. Not native to North America (the genus Malus spans Europe, Asia, and North America, but the cultivated apple is an Old World hybrid lineage). Almost all varieties are self-incompatible: a second, different apple cultivar blooming at the same time must be nearby for fruit to set, and trees are grown on dwarf, semi-dwarf, or standard rootstocks that decide final size.
Tree
Full sun
Moderate water
Zones 5a-8b
Climate: narrow
+5
Tree
Full sun
Moderate water
Zones 5a-8b
Climate: narrow
Edible
Focal point
Structure
+3
Edible
Focal point
Structure
Prunus armeniaca
Apricot
A small deciduous Rosaceae fruit tree grown for its golden-orange, red-blushed drupes — fragrant, showy, edible, and ripening in summer. Fragrant white flowers (pink in bud) open in early spring before the foliage, two weeks ahead of peaches. That early bloom is also its weakness: the flowers are extremely susceptible to frost injury, so apricots are notoriously hard to crop reliably outside sheltered sites.
Tree
Full sun
Moderate water
Zones 5a-8b
Climate: narrow
+5
Tree
Full sun
Moderate water
Zones 5a-8b
Climate: narrow
Focal point
Edible
Structure
+3
Focal point
Edible
Structure
Symphyotrichum oblongifolium
Aromatic aster
A native central + eastern US perennial with intensely aromatic foliage when crushed and dense clouds of small blue-purple flowers in late fall — often the latest-blooming aster in the eastern flora. Drought + clay tolerant; among the toughest native fall pollinator plants.
Perennial
Full sun
Moderate water
Zones 3a-8b
Climate: broad
+5
Perennial
Full sun
Moderate water
Zones 3a-8b
Climate: broad
Pollinator
Border
+2
Pollinator
Border
Viburnum dentatum
Arrowwood viburnum
A native eastern + central North American multi-stemmed deciduous shrub with dentate (toothed) foliage, white spring flower clusters, blue-black drupes, and reliable fall color. Especially valued for wildlife — among the most-cited native shrubs for fall-migration bird forage.
Shrub
Full sun / Part shade
Moderate water
Zones 2a-8b
Climate: broad
+5
Shrub
Full sun / Part shade
Moderate water
Zones 2a-8b
Climate: broad
Structure
Pollinator
Border
+3
Structure
Pollinator
Border
Eruca vesicaria
Arugula
A fast cool-season annual of the mustard family grown for its peppery, mustard-like salad greens — irregular, pinnately-lobed basal leaves in a low rosette, each with 4 to 10 small lateral lobes and a large terminal lobe (Missouri Botanical Garden). First cultivated by the ancient Greeks and Romans and still widely grown across Europe, it is best grown in the cooler spring and fall months rather than summer heat; leaves are harvested young and tender before they turn strong and bitter. Pale-yellow four-petalled flowers with dark brown or purple veins appear in corymbs if plants are left to bloom.
Vegetable
Full sun / Part shade
Consistent moisture
Zones 2-11
Climate: moderate
+5
Vegetable
Full sun / Part shade
Consistent moisture
Zones 2-11
Climate: moderate
Edible
Container
+2
Edible
Container
Showing 24 of 314 plants. Search above to narrow the list.
Future climate matches
Likely better as winters warm
15 plants
These plants are not the best current fit, but the mid-century projection moves this region toward their comfort range.
Laurus nobilis
Bay laurel
The Mediterranean evergreen whose leathery, glossy dark-green leaves are the bay leaf of the kitchen. Missouri Botanical Garden PlantFinder describes it as a pyramidal, aromatic evergreen tree or large shrub that can reach 60 feet but is usually seen at 10-30 feet and is often pruned to 8 feet or less for garden use. Trees are dioecious: small yellowish-green spring flowers on female plants, if pollinated, give way to single-seeded purple-black berries. Winter hardy only to USDA Zone 8, so it is grown as a clipped container houseplant farther north.
Shrub
Full sun / Part shade
Moderate water
Zones 8a-10b
Climate: narrow
+5
Shrub
Full sun / Part shade
Moderate water
Zones 8a-10b
Climate: narrow
Structure
Focal point
Edible
Container
+4
Structure
Focal point
Edible
Container
Ceanothus thyrsiflorus
Blueblossom
The hardiest and largest of the California lilacs — a fast-growing broadleaf-evergreen shrub of the Pacific coast that smothers itself in dense thyrse clusters of pale-to-deep blue flowers in spring. Glossy three-veined, finely toothed dark-green leaves and a billowing shrub habit make it a signature blue mass on West Coast slopes. Drought tolerant once established, it asks for little summer water and resents overwatering; deer and elk browse the foliage and the bloom is a documented draw for native bees.
Shrub
Full sun / Part shade
Low water
Zones 8a-10b
Climate: narrow
+5
Shrub
Full sun / Part shade
Low water
Zones 8a-10b
Climate: narrow
Focal point
Structure
Pollinator
+3
Focal point
Structure
Pollinator
Epilobium canum
California fuchsia
A drought-hardy western-native subshrub (long known as Zauschneria) that lights up dry, rocky ground with scarlet tubular flowers from midsummer until frost — exactly when migrating and resident hummingbirds need a late-season nectar source. Slender, highly-branched stems carry small grey-green lance-shaped leaves; the whole plant thrives on full sun, lean soil, and very little water once established.
Perennial
Full sun / Part shade
Low water
Zones 8a-10b
Climate: narrow
+5
Perennial
Full sun / Part shade
Low water
Zones 8a-10b
Climate: narrow
Pollinator
Border
Filler
+3
Pollinator
Border
Filler
Zantedeschia aethiopica
Calla lily
A bold, clumping rhizomatous perennial grown for its elegant, pure-white funnel-shaped flowers — actually a curved spathe wrapped around a yellow finger-like spadix — held on tall stems above large, glossy, arrow-shaped deep-green leaves from late winter into summer. Native to the wetlands and seeps of southern Africa, Zantedeschia aethiopica is the classic florist's calla and a striking water-margin and container plant, thriving in consistently moist to wet rich soil in full sun to part shade. It is tender (hardy in zones 8a-10b), where it overwinters in the ground and can be near-evergreen; colder gardeners grow it from lifted rhizomes or under heavy mulch. Two cautions are load-bearing: every part is toxic if eaten (calcium-oxalate raphides), and in mild, wet climates it can escape and naturalize into an invasive weed.
Perennial
Full sun / Part shade
Consistent moisture
Zones 8a-10b
Climate: narrow
+5
Perennial
Full sun / Part shade
Consistent moisture
Zones 8a-10b
Climate: narrow
Focal point
Container
Border
+3
Focal point
Container
Border
Arctostaphylos manzanita
Common manzanita
An evergreen California chaparral shrub famous for its smooth, sinuous, red-orange bark and crooked branches — "manzanita" means "little apple" for the small reddish berries. Bright green, broadly ovate leaves stand year-round above the polished trunks, and nodding white-to-pink urn-shaped flowers open from February into April. A dry-slope native of the Coast Ranges and Sierra Nevada foothills that asks for almost no summer water once established.
Shrub
Full sun / Part shade
Low water
Zones 8a-10b
Climate: narrow
+5
Shrub
Full sun / Part shade
Low water
Zones 8a-10b
Climate: narrow
Structure
Focal point
+2
Structure
Focal point
Olea europaea
Common olive
The classic Mediterranean evergreen — one of the first trees ever cultivated (Crete, ~2500 B.C.) and the source of eating olives and olive oil. It grows 20-30 feet with a rounded crown, smooth gray bark that gnarls picturesquely with age, and opposite lance-shaped leaves that are gray-green above and silver beneath. Fragrant white summer flowers give way to oval green drupes that ripen to black. Drought tolerant once established, but winter-hardy only to USDA Zone 8.
Tree
Full sun
Moderate water
Zones 8a-10b
Climate: narrow
+5
Tree
Full sun
Moderate water
Zones 8a-10b
Climate: narrow
Focal point
Structure
Edible
+3
Focal point
Structure
Edible
Gardenia jasminoides
Gardenia
A broadleaf-evergreen shrub from China, Taiwan, and Japan grown for intensely fragrant, waxy white-to-ivory double flowers set against glossy dark-green leaves. Missouri Botanical Garden PlantFinder rates it high-maintenance: it demands a well-drained, humus-rich, acidic soil and light-to-moderate shade, and resents alkaline or hard-water conditions that turn its leaves yellow. The night-intensified scent draws sphinx moths and daytime bees to a classic warm-climate hedge or near-entry container plant.
Shrub
Part shade
Moderate water
Zones 8a-11b
Climate: narrow
+5
Shrub
Part shade
Moderate water
Zones 8a-11b
Climate: narrow
Structure
Focal point
+2
Structure
Focal point
Canna indica
Indian shot
A bold, tropical-looking rhizomatous perennial grown for its big, paddle-shaped banana-like leaves and slim spikes of red, orange, or yellow flowers from summer to frost. Native to Central America, South America, and the West Indies, Canna indica is the wild ancestor behind many garden canna hybrids — narrower-flowered and more upright than the showy modern cultivars, with hard, round black seeds once used as shot, which give it its common name. It thrives in heat, humidity, and consistently moist to wet rich soil in full sun, where it forms erect clumps that read as instant tropical structure. In its hardiness range (zones 8a-11b) it overwinters in the ground; colder gardeners lift and store the rhizomes.
Perennial
Full sun / Part shade
Consistent moisture
Zones 8a-11b
Climate: narrow
+5
Perennial
Full sun / Part shade
Consistent moisture
Zones 8a-11b
Climate: narrow
Focal point
Structure
Border
+3
Focal point
Structure
Border
Actinidia deliciosa
Kiwifruit
A vigorous, fast-growing woody vine from China grown commercially worldwide for its fuzzy brown, edible fruits. It climbs 15-30 feet and can fill a 200 sq. ft. trellis in time, carrying large rounded leaves and slightly fragrant cream flowers that open on year-old wood in late spring. It is dioecious: a male pollinizer must be grown alongside female plants for fruit to set.
Perennial
Full sun / Part shade
Moderate water
Zones 8a-9b
Climate: narrow
+5
Perennial
Full sun / Part shade
Moderate water
Zones 8a-9b
Climate: narrow
Structure
Edible
+2
Structure
Edible
Zoysia tenuifolia
Korean velvet grass
Korean velvet grass (Zoysia tenuifolia) is an extremely fine-textured, warm-season turfgrass native to East Asia, prized as a low, almost mossy 'no-mow' lawn alternative and groundcover. Left unmown it knits into a dense, undulating carpet of tiny needle-fine blades that mounds and ripples like green velvet — the look that earns its other names, 'temple grass' and 'Mascarene grass.' It is slow to establish but, once knit in, dense and surprisingly traffic-tolerant. Two honest caveats keep it from being a carefree choice: it spreads aggressively by surface stolons (runners) and will creep into beds and over a neighbor's edge unless contained by hard edging, and like all zoysias it is a warm-season grass that turns straw-brown and goes dormant through cool weather — it is NOT evergreen in winter. Its taxonomy is also muddled: many authorities treat Zoysia tenuifolia as a synonym of Zoysia matrella or Zoysia pacifica, so it travels under several names in the trade.
Grass
Full sun / Part shade
Moderate water
Zones 8a-11b
Climate: narrow
+5
Grass
Full sun / Part shade
Moderate water
Zones 8a-11b
Climate: narrow
Structure
Filler
+2
Structure
Filler
Nerium oleander
Oleander
A tough, broadleaf-evergreen Mediterranean shrub grown across the warm-climate United States for its long summer-to-fall season of showy pink, white, red, or salmon flowers and its near-indestructible tolerance of heat, drought, salt, and reflected pavement glare. It forms a clumping, erect, rounded multi-stemmed shrub that commonly stands 6-12 feet tall (and can be trained much taller) with narrow leathery deep-green leaves. The catch is severe: every part of the plant is highly toxic — ingestion of even small amounts can be fatal to people, pets, and livestock, and the smoke from burning prunings is hazardous — so it is a strictly look-but-never-touch ornamental.
Shrub
Full sun / Part shade
Moderate water
Zones 8a-10b
Climate: narrow
+5
Shrub
Full sun / Part shade
Moderate water
Zones 8a-10b
Climate: narrow
Structure
Border
Focal point
+3
Structure
Border
Focal point
Punica granatum
Pomegranate
A multi-stemmed deciduous shrub or small tree cultivated for millennia for its orange-sized, leathery-skinned edible fruit packed with juicy seed arils. Glossy oblong leaves back showy orange-red summer flowers that ripen into the crowned, persistent-calyx fruit. Drought-tolerant and at its best in long, hot, dry summers with cool winters; grown for hedges, specimens, and Mediterranean-style gardens where winter-hardy.
Shrub
Full sun
Low water
Zones 8a-11b
Climate: narrow
+5
Shrub
Full sun
Low water
Zones 8a-11b
Climate: narrow
Focal point
Structure
Edible
+3
Focal point
Structure
Edible
Salvia rosmarinus
Rosemary
A Mediterranean-native evergreen aromatic woody subshrub long known as Rosmarinus officinalis (reclassified to Salvia rosmarinus in 2017 based on molecular phylogenetics). Highly drought-tolerant once established; pale-blue spring flowers; foliage harvested year-round in mild climates as the canonical Mediterranean culinary herb. Borderline-hardy in zones below 7 — overwintered indoors or treated as annual outside zones 8-10.
Herb
Full sun
Low water
Zones 8a-10b
Climate: narrow
+5
Herb
Full sun
Low water
Zones 8a-10b
Climate: narrow
Border
Edible
Structure
+3
Border
Edible
Structure
Quercus virginiana
Southern live oak
An iconic evergreen oak of the southeastern coastal plain — sprawling massive trees draped with Spanish moss define the Southern landscape. Long-lived (300-500+ years in undisturbed sites) with horizontal limbs extending 80+ feet from the trunk in mature specimens. Salt-tolerant + hurricane-resistant (the canonical coastal-plain canopy tree). Like all oaks, supports hundreds of Lepidoptera species.
Tree
Full sun / Part shade
Moderate water
Zones 8a-10b
Climate: moderate
+5
Tree
Full sun / Part shade
Moderate water
Zones 8a-10b
Climate: moderate
Focal point
Structure
+2
Focal point
Structure
Curcuma longa
Turmeric
A tropical rhizomatous herbaceous perennial in the ginger family, grown the world over for the thick branched rhizomes that — boiled, dried, and ground — become the bright yellow-orange spice. The foliage clump rises 3-4 feet in canna-like, pleated, lanceolate-to-elliptic green leaves up to 40 inches long, topped in summer by short dense spikes of pale yellow flowers among pinkish bracts. The flowers are sterile, so the plant is propagated entirely from rhizome division.
Perennial
Full sun / Part shade
Consistent moisture
Zones 8a-11b
Climate: narrow
+5
Perennial
Full sun / Part shade
Consistent moisture
Zones 8a-11b
Climate: narrow
Edible
Structure
Container
+3
Edible
Structure
Container
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.
Climate-resilient · 2 plants
Bright shade foundation
A part-shade planting with shrub structure and low foliage contrast.
Annabelle hydrangea
Coral bells
+2
Annabelle hydrangea
Coral bells
+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
Black-eyed Susan
Wild bergamot
Sweet Joe-Pye weed
Cutleaf coneflower
New England aster
+8
Switchgrass
Little bluestem
Common milkweed
Black-eyed Susan
Wild bergamot
Sweet Joe-Pye weed
Cutleaf coneflower
New England aster
+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
+9
Butterfly weed
Common milkweed
Purple coneflower
Wild bergamot
Scarlet bee balm
Little bluestem
Sweet Joe-Pye weed
Swamp sunflower
Smooth blue aster
Climate-resilient · 4 plants
Sunny pollinator border
A durable sunny border with summer bloom, seedheads, and upright winter texture.
English lavender
Purple coneflower
Black-eyed Susan
Switchgrass
+4
English lavender
Purple coneflower
Black-eyed Susan
Switchgrass
+2
Newly possible by 2070 · 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
+6
English lavender
Rosemary
Garden sage
Oregano
Common thyme
Fox grape
Similar planting regions
Browse other regions with a similar hot, dry-summer rhythm. Their plant lists can suggest species and combinations worth comparing.
RESOLVE 426 - Nearctic
Baja California desert
The Baja California desert spans the western Baja California Peninsula in Mexico, across both Baja California and Baja California Sur states, bounded by the Pacific to the west and the Peninsular Ranges to the east. Its xeric shrublands hold close to 500 vascular plant species, including the endemic boojum tree (Fouquieria columnaris), creosote bush, and many cacti, with roughly 23% of plant species endemic. The climate is dry and mostly subtropical; the Pacific Ocean adds humidity and moderates temperatures, while the driest interior areas receive less than 50 mm of rain a year. About 60% of the ecoregion lies in protected areas, including Mexico's El Vizcaíno Biosphere Reserve.
Deserts & Xeric Shrublands
Zones 11a-13a
+2.7°F by 2070
30,014 sq mi
NNH tier 1
RESOLVE 427 - Nearctic
Central Mexican matorral
The Central Mexican matorral is a semi-arid shrubland ecoregion of roughly 59,400 sq km on the southern Mexican Plateau, encompassing the Valley of Mexico and Mexico City, North America's largest metropolis. This relatively flat desert reaches elevations up to about 2,000 m and is ringed and dotted by mountain ranges. Its climate is subtropical and semi-arid, with warm summers, occasional summer rains, and cool winters; average annual precipitation is under 500 mm. The characteristic vegetation is dry matorral dominated by cacti, agaves, and shrubs such as lechuguilla and acacias, with the golden barrel cactus (Echinocactus grusonii) as a flagship species. Geographic isolation drives exceptionally high endemism, but the ecoregion is classified critical/endangered, with little protected habitat and pressure from agriculture, grazing, urban growth, and illegal cactus collection.
Deserts & Xeric Shrublands
Zones 10b-13a
+3.0°F by 2070
22,915 sq mi
NNH tier 4
RESOLVE 428 - Nearctic
Chihuahuan desert
The Chihuahuan desert — the largest North American desert, covering western Texas, southern New Mexico, southeastern Arizona, and substantial portions of the Mexican states of Chihuahua, Coahuila, Durango, and Zacatecas. Higher and cooler than the Sonoran; summer monsoonal rainfall supports the largest cacti diversity in North America (~350 species), with creosote bush, lechuguilla, sotol, and Yucca matrix species. Big Bend National Park covers a famous US portion.
Deserts & Xeric Shrublands
Zones 10a-13b
+3.0°F by 2070
194,134 sq mi
Editorial profile
NNH tier 2
RESOLVE 429 - Nearctic
Colorado Plateau shrublands
The Colorado Plateau shrublands stretch across the high desert country of Utah, Colorado, Arizona, and New Mexico, an elevated, northward-tilted saucer largely above 1,525 meters and ringed by higher mountains. Pinyon-juniper woodlands dominate, grading into big sagebrush and semi-desert shrubland at lower elevations and ponderosa pine forest higher up. The climate is arid to semiarid, with cold winters and hot summer days. Carved by the Colorado River and its tributaries, the region holds iconic landscapes such as the Grand Canyon and roughly 300 endemic plant species, yet only about 11% is protected.
Deserts & Xeric Shrublands
Zones 7a-10b
+4.7°F by 2070
109,417 sq mi
NNH tier 2
RESOLVE 430 - Nearctic
Great Basin shrub steppe
The Great Basin shrub steppe spans most of Nevada and much of Utah, with adjoining areas of California and Idaho, bounded by the Sierra Nevada to the west and the Wasatch Mountains to the east. Its landscape is a series of uplifted fault-block mountains separated by intervening basins, vegetated by big sagebrush along with bluebunch wheatgrass, Idaho fescue, and pinyon-juniper woodlands. The climate is extreme and arid: less than 250 mm of annual precipitation, with recorded temperatures at Elko, Nevada ranging from -42°C to +42°C. Roughly 100 internally drained basins hold remnant Pleistocene lakes such as Great Salt Lake and Pyramid Lake. Invasive cheatgrass and the unnaturally frequent fires it fuels are a leading conservation threat.
Deserts & Xeric Shrublands
Zones 8a-10b
+4.7°F by 2070
116,063 sq mi
NNH tier 2
RESOLVE 431 - Nearctic
Gulf of California xeric scrub
The Gulf of California xeric scrub runs down the eastern side of Mexico's Baja California Peninsula along the Gulf of California, from the gulf shore up to the crest of the Sierra de la Giganta and across several gulf islands, covering roughly 23,600 km2. It is a dry, low-mountain landscape (mostly 200-1,000 m) of desert shrubland dominated by creosote bush, white bursage, and ironwood. The climate is arid and subtropical, with some of the lowest precipitation in all of Mexico (under 100 mm). Distinctively, much of the region's biodiversity and high endemism is tied not to the open scrub but to scattered palm oases; roughly half the ecoregion lies within protected areas.
Deserts & Xeric Shrublands
Zones 11b-13a
+2.6°F by 2070
9,107 sq mi
NNH tier 1
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) - 2 sub-regions
12 · Snake River Plain
80 · Northern Basin and Range
Source: USGS / EPA via Omernik (1987).
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.). Snake-Columbia shrub steppe (Snake-Columbia shrub steppe). Retrieved 2026, June 14, from https://plotwright.garden/regions/resolve-434
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.)