Country

United States of America

United States of America: 89 ecoregions. Each with its climate now and toward 2050, and its conservation tier.

Landscape and climate

Eighty-nine ecoregions touch the United States, more than almost any other country, spanning three realms and nearly every biome on the roster: tundra and boreal taiga in Alaska, temperate broadleaf forest across the East and Great Lakes, temperate conifer forest along the Pacific slope and the Rockies, temperate grasslands from tallgrass prairie to shortgrass steppe, Mediterranean chaparral in California, the Chihuahuan, Sonoran, and Mojave deserts plus the Great Basin shrub steppe, Everglades flooded grasslands, mangroves, and tropical moist and dry forest in Hawai'i. For gardeners this means almost nothing generalizes nationally: a plant proven in the New England-Acadian forests says little about the Sonoran desert or Puget lowland forests. Many prairie and eastern forest ecoregions carry the Nature Imperiled tier, which makes regionally native planting a genuine contribution, not a gesture. Start from your specific ecoregion, not the country.

By state or province

Narrow this down to a single state or province.

Ecoregions here

Ahklun and Kilbuck Upland Tundra Alaska Peninsula montane taiga Alaska-St. Elias Range tundra Aleutian Islands tundra Allegheny Highlands forests Appalachian mixed mesophytic forests Appalachian-Blue Ridge forests Arctic coastal tundra Arctic foothills tundra Arizona Mountains forests Atlantic coastal pine barrens Bahamian-Antillean mangroves Beringia lowland tundra Beringia upland tundra Blue Mountains forests British Columbia coastal conifer forests Brooks-British Range tundra California Central Valley grasslands California coastal sage and chaparral California interior chaparral and woodlands California montane chaparral and woodlands Canadian Aspen forests and parklands Central Pacific Northwest coastal forests Central Tallgrass prairie Central US forest-grasslands transition Central-Southern Cascades Forests Central-Southern US mixed grasslands Chihuahuan desert Colorado Plateau shrublands Colorado Rockies forests Cook Inlet taiga Copper Plateau taiga Cross-Timbers savanna-woodland East Central Texas forests Eastern Cascades forests Eastern Great Lakes lowland forests Edwards Plateau savanna Everglades flooded grasslands Flint Hills tallgrass prairie Great Basin montane forests Great Basin shrub steppe Hawai'i tropical dry forests Hawai'i tropical high shrublands Hawai'i tropical low shrublands Hawai'i tropical moist forests Interior Alaska-Yukon lowland taiga Interior Plateau US Hardwood Forests Interior Yukon-Alaska alpine tundra Klamath-Siskiyou forests Mid-Atlantic US coastal savannas Mississippi lowland forests Mojave desert Montana Valley and Foothill grasslands Nebraska Sand Hills mixed grasslands North Cascades conifer forests Northeastern Coastal Forests Northeastern Hardwoods Northern California coastal forests Northern Pacific Alaskan coastal forests Northern Rockies conifer forests Northern Shortgrass prairie Northern Tallgrass prairie Ogilvie-MacKenzie alpine tundra Ozark Highlands mixed forests Ozark Mountain forests Pacific Coastal Mountain icefields and tundra Palouse prairie Piedmont Piney Woods Puget lowland forests Santa Lucia Montane Chaparral & Woodlands Sierra Madre Occidental pine-oak forests Sierra Madre Oriental pine-oak forests Sierra Nevada forests Snake-Columbia shrub steppe Sonoran desert South Central Rockies forests Southeast US conifer savannas Southeast US mixed woodlands and savannas Southern Great Lakes forests Tamaulipan mezquital Texas blackland prairies Upper Midwest US forest-savanna transition Wasatch and Uinta montane forests Western Great Lakes forests Western Gulf coastal grasslands Western shortgrass prairie Willamette Valley oak savanna Wyoming Basin shrub steppe