Plant Maps
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Interactive EPA Ecoregions Map for Montana

Based on Ecoregions developed by the EPA, Plantmaps Ecoregions describe areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources, as well as similarity of climate that can assist Montana gardenders.

15a - Grave Creek Range-Nine Mile Divide
15b - Camas Valley
15c - Flathead Valley
15d - Tobacco Plains
15e - Flathead Hills and Mountains
15h - High Northern Rockies
15i - Clearwater Mountains and Breaks
15k - Clark Fork Valley and Mountains
15l - Salish Mountains
15o - Coeur d Alene Metasedimentary Zone
15p - St. Joe Schist-Gneiss Zone
15q - Purcell-Cabinet-North Bitterroot Mountains
15t - Stillwater-Swan Wooded Valley
16a - Eastern Batholith
16b - Lochsa Uplands
16e - Glaciated Bitterroot Mountains and Canyons
16h - High Idaho Batholith
16i - South Clearwater Forested Mountains
17aa - Dry Intermontane Sagebrush Valleys
17ab - Dry Gneissic-Schistose-Volcanic Hills
17ac - Big Hole
17ad - Western Beaverhead Mountains
17ae - Forested Beaverhead Mountains
17af - Centennial Basin
17ag - Pioneer-Anaconda Ranges
17ah - Eastern Pioneer Sedimentary Mountains
17ai - Elkhorn Mountains-Boulder Batholith
17aj - Eastern Divide Mountains
17ak - Deer Lodge-Philipsburg-Avon Grassy Intermontane Hills and Valleys
17al - Southern Garnet Sedimentary-Volcanic Mountains
17am - Flint Creek-Anaconda Mountains
17ao - Absaroka Volcanic Subalpine Zone
17ap - Sedimentary Subalpine Zone
17d - Eastern Gravelly Mountains
17e - Barren Mountains
17f - Crazy Mountains
17g - Mid-elevation Sedimentary Mountains
17h - High Elevation Rockland Alpine Zone
17i - Absaroka-Gallatin Volcanic Mountains
17j - Yellowstone Plateau
17k - Granitic Subalpine Zone
17l - Gneissic-Schistose Forested Mountains
17m - Dry Mid-elevation Sedimentary Mountains
17p - Foothill Potholes
17q - Big Snowy-Little Belt Carbonate Mountains
17r - Scattered Eastern Igneous-Core Mountains
17s - Bitterroot-Frenchtown Valley
17t - Limy Foothill Savanna
17u - Paradise Valley
17v - Big Belt Forested Highlands
17w - Townsend Basin
17x - Rattlesnake-Blackfoot-South Swan-Northern Garnet-Sapphire Mountains
17y - Townsend-Horseshoe-London Sedimentary Hills
17z - Tobacco Root Mountains
18b - Bighorn Basin
41a - Northern Front
41b - Crestal Alpine-Subalpine Zone
41c - Western Canadian Rockies
41d - Southern Carbonate Front
41e - Flathead Thrust Faulted Carbonate-Rich Mountains
42b - Collapsed Glacial Outwash
42d - Northern Missouri Coteau
42i - Glaciated Dark Brown Prairie
42j - Glaciated Northern Grasslands
42k - Coteau Lakes Upland
42l - Sweetgrass Uplands
42m - Cherry Patch Moraines
42n - Milk River Pothole Upland
42o - North Central Brown Glaciated Plains
42q - Rocky Mountain Front Foothill Potholes
42r - Foothill Grassland
43a - Missouri Plateau
43b - Little Missouri Badlands
43c - River Breaks
43d - Forested Buttes
43e - Sagebrush Steppe
43g - Semiarid Pierre Shale Plains
43k - Dense Clay Prairie
43l - Missouri Breaks Woodland-Scrubland
43m - Judith Basin Grassland
43n - Central Grassland
43o - Unglaciated Montana High Plains
43p - Ponderosa Pine Forest-Savanna Hills
43q - Mesic Dissected Plains
43s - Non-calcareous foothill grassland
43t - Shield-Smith Valleys
43u - Limy Foothill Grassland
43v - Pryor - Bighorn Foothills