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Pacific Coastal Mountain icefields and tundra
Biome
Tundra
·
Biogeographic realm
Nearctic

Pacific Coastal Mountain icefields and tundra

Pacific Coastal Mountain icefields and tundra
The Pacific Coastal Mountain icefields and tundra is a tundra ecoregion of the Coast Ranges, stretching from south-central Alaska's Kenai Peninsula through British Columbia and into the Yukon, with elevations from sea level to over 4,500 m. Its extensive glaciers form one of the largest nonpolar icefields in the world, and much of the terrain lies beneath ice and is largely unvegetated. Where ground is exposed, vegetation is dominated by dwarf and low shrub communities, including mountain heath and ericaceous shrubs, grading into subalpine forest and coastal rainforest at lower elevations. The climate is cold and very wet, with a mean annual temperature near -0.5°C and most precipitation falling as snow. Protected areas include Kenai Fjords and Glacier Bay National Parks and parts of the Kluane-Wrangell-St. Elias UNESCO World Heritage system.
RESOLVE 420
Nearctic
40,974 sq mi
Tundra
Landscape type
Tundra
Plant region
Nearctic
Region footprint
40,974 sq mi
Habitat pressure
Half Protected (Dinerstein NNH 1)
Use this as the broad planting pattern for the region: Treeless polar and high-mountain landscapes of low shrubs, sedges, mosses, and lichens, where cold and a short growing season cap plant height. Soils are frequently frozen as permafrost, and these systems recover only slowly from disturbance. 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 534 of 534 climate-fit plants for this region.
Reliable climate fits
Good bets for now and later
487 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.
Future climate matches
Likely better as winters warm
46 plants
These plants are not the best current fit, but the mid-century projection moves this region toward their comfort range.

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.
Annabelle hydrangea (Hydrangea arborescens 'Annabelle') showing large white ball-shaped flower clusters on a rounded deciduous shrub.
Coral bells (Heuchera 'Marmalade') showing a low mound of ruffled coppery-orange foliage characteristic of the Heuchera villosa-derived hybrids.
Climate-resilient · 2 plants
Bright shade foundation
A part-shade planting with shrub structure and low foliage contrast.
Annabelle hydrangea
Coral bells
Switchgrass (Panicum virgatum) mature clump in the green growing season, its upright vase-shaped habit topped by the airy, diffuse open panicles diagnostic of the species.
Little bluestem (Schizachyrium scoparium) clumps in a garden bed, showing the species' upright, fine-textured blue-green vase-shaped growing-season habit.
Common milkweed (Asclepias syriaca) mature clump in flower, showing its stout upright reddish stems, broad opposite leaves, and pink-mauve flower umbels with young green pods.
A full clump of black-eyed Susan (Rudbeckia fulgida 'Goldsturm') in a garden bed, showing the dense mounded foliage base topped with golden, dark-centered daisies on branching stems.
+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
Orange coneflower
Wild bergamot
Sweet Joe-Pye weed
Cutleaf coneflower
New England aster
A mature butterfly weed (Asclepias tuberosa) clump in a garden bed, showing its bushy mounded habit with several flat-topped orange umbels above a dense whorl of narrow leaves.
Common milkweed (Asclepias syriaca) mature clump in flower, showing its stout upright reddish stems, broad opposite leaves, and pink-mauve flower umbels with young green pods.
Purple coneflower (Echinacea purpurea) in bloom, showing pinkish-purple ray petals around a brown-domed central cone on an erect stem.
Wild bergamot (Monarda fistulosa) clump in an open meadow, its several upright square stems each topped by a ragged lavender flower head over toothed mint-family foliage.
+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
A mature oakleaf hydrangea (Hydrangea quercifolia) in flower - a broad, mounded multi-stemmed shrub studded with upright white panicles above coarse, deeply lobed oak-shaped leaves.
Woodland phlox (Phlox divaricata) showing five-petaled pale lavender-blue flowers on slender erect stems above a low spreading mat of foliage.
Wild columbine (Aquilegia canadensis) whole plant in rocky-ledge habitat, the airy blue-green compound foliage hung with nodding red-and-yellow spurred flowers.
Foamflower (Tiarella cordifolia) showing characteristic frothy white spring flower spikes above heart-shaped foliage.
+2
Climate-resilient · 6 plants
Part-shade woodland edge
A part-shade / bright-shade planting for morning sun or dappled light - eastern North American woodland-edge natives with spring bloom, season-long foliage, and a fern + shrub structure.
Oakleaf hydrangea
Woodland phlox
Wild columbine
Foamflower
Hairy alumroot
Christmas fern
A green-season spicebush (Lindera benzoin) in its native woodland understory, showing the loose, open, multi-stemmed branching and alternate obovate leaves.
Wild ginger (Asarum canadense) - a clump rising from a mossy forest floor, paired heart-shaped leaves on fuzzy petioles arching over the maroon jug-shaped flowers nestled at ground level.
Bloodroot (Sanguinaria canadensis) showing characteristic white multi-petaled flower wrapped in a rounded leaf.
Virginia bluebells (Mertensia virginica) showing pendulous pink-to-blue bell-shaped flower clusters above smooth blue-green foliage.
+3
Climate-resilient · 7 plants
Shade & understory woodland
A full-shade woodland-floor community for deep shade beneath a closed canopy: an understory shrub, spreading groundcovers, spring ephemerals, and a large fern - eastern North American natives that expect low light and leaf-litter soil.
Northern spicebush
Wild ginger
Bloodroot
Virginia bluebells
Mayapple
Ostrich fern
Foamflower
English lavender (Lavandula angustifolia) as a broadly mounded, dense subshrub of fine silvery blue-green aromatic foliage.
Purple coneflower (Echinacea purpurea) in bloom, showing pinkish-purple ray petals around a brown-domed central cone on an erect stem.
A full clump of black-eyed Susan (Rudbeckia fulgida 'Goldsturm') in a garden bed, showing the dense mounded foliage base topped with golden, dark-centered daisies on branching stems.
Switchgrass (Panicum virgatum) mature clump in the green growing season, its upright vase-shaped habit topped by the airy, diffuse open panicles diagnostic of the species.
Climate-resilient · 4 plants
Sunny pollinator border
A durable sunny border with summer bloom, seedheads, and upright winter texture.
English lavender
Purple coneflower
Orange coneflower
Switchgrass

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: 14
Host/specialist links: 4
Forage/pollination links: 16
Shelter links: 1
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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: 14
Host/specialist links: 4
Forage/pollination links: 16
Shelter links: 1
AD
AF
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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: 21
Host/specialist links: 4
Forage/pollination links: 21
Shelter links: 4
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Similar planting regions

Browse other regions in the same biome. Their plant lists can suggest species and combinations worth comparing.
Glacial valley lake and open upland tundra in Togiak National Wildlife Refuge, Alaska.
RESOLVE 404 - Nearctic
Ahklun and Kilbuck Upland Tundra
The Ahklun and Kilbuck Upland Tundra ecoregion spans the rugged Ahklun and Kilbuck mountain ranges of southwestern Alaska, bounded by the Bering Sea and its bays. Steep, sharp mountains-glaciated during the Pleistocene, with only a few small glaciers remaining-are separated by broad, flat valleys. Vegetation is largely moist and alpine tundra and dwarf scrub thickets dominated by heath-family plants, dwarf Arctic birch, and mountain avens; trees such as white and black spruce, paper birch, and balsam poplar are confined to valley floors and lower slopes. The climate mixes maritime and continental influences, with annual precipitation ranging from about 1,020 mm in lowlands to 2,030 mm in the high mountains. It is among the most pristine ecoregions on the continent, with 99% of habitat intact, much of it within the Togiak National Wildlife Refuge.
Tundra
Zones 2b-5b
+11.1°F by 2070
19,511 sq mi
NNH tier 1
Snow-covered Saint Elias Mountains and glaciers in Alaska.
RESOLVE 405 - Nearctic
Alaska-St. Elias Range tundra
The Alaska-St. Elias Range tundra spans a broad arc of northern mountains across Alaska, southwestern Yukon, and northwestern British Columbia, encompassing the Alaska Range and Wrangell-St. Elias Range and reaching the summit of Denali, North America's highest peak. Much of the ecoregion is rocky slopes, ice fields, and glaciers; where permanent snow and ice are absent, alpine tundra dominated by dwarf shrub communities, mountain avens, and heath-family shrubs prevails, with willows, alders, and dwarf birch on more protected slopes. The climate is alpine and glacierized North Pacific cordilleran, largely continental except for a maritime influence near Cook Inlet. The hoary marmot is the flagship species, and roughly 45% of the ecoregion is protected.
Tundra
Zones 1b-5a
+7.2°F by 2070
63,442 sq mi
NNH tier 2
Treeless maritime tundra rolling across Adak Island in the central Aleutian Islands, low grass and heath vegetation over volcanic terrain under overcast sky.
RESOLVE 406 - Nearctic
Aleutian Islands tundra
The Aleutian Islands tundra spans the 1,500-km arc of volcanic islands stretching from the Alaska Peninsula toward Russia's Kamchatka, plus the Pribilof Islands, dividing the North Pacific from the Bering Sea. Treeless maritime tundra covers the islands: dwarf scrub of crowberry and willows on exposed high ground, bluejoint-grass meadows on moist sites, and heath, sedge, and sphagnum bogs in the lowlands. The climate is cool and maritime, with mild winters, cool summers, and annual precipitation ranging from roughly 530 to 2,080 mm. About 98% of the ecoregion is protected within the Alaska Maritime National Wildlife Refuge, which supports breeding habitat for an estimated 40 million seabirds.
Tundra
Zones 7b
+4.0°F by 2070
4,722 sq mi
NNH tier 1
Arctic coastal tundra and the Firth River delta viewed from Engigstciak.
RESOLVE 407 - Nearctic
Arctic coastal tundra
The Arctic Coastal Tundra spans most of Alaska's northern coastline, a low coastal plain (0-150 m) along the Beaufort Sea in the Nearctic realm. Poorly drained terrain is dotted with thaw lakes covering up to half the ecoregion, and vegetation is dominated by wet tundra, fens, bogs, and marshes of grasses, sedges, and mosses, with dwarf shrubs on better-drained ground. The Arctic climate brings low precipitation (100-300 mm) and continuous, ice-rich permafrost with ice wedges and pingos. Its flagship species is the beluga whale; only about 4% lies in protected areas though most remains intact.
Tundra
Zones 1b-3a
+9.8°F by 2070
19,174 sq mi
NNH tier 2
Arctic foothills tundra and braided streams below the Brooks Range in Alaska.
RESOLVE 408 - Nearctic
Arctic foothills tundra
The Arctic foothills tundra is a transitional belt of rounded hills and plateaus spanning northwestern Alaska, northern Yukon, and the northwestern Northwest Territories, lying between the Arctic Coastal Tundra to the north and the Brooks-British Range Tundra to the south. Its better-drained terrain-with fewer thaw lakes than the saturated coast-supports moist tussock sedges, dwarf shrubs, and scrub, with open white spruce stands mixed with balsam poplar and willow along the Noatak River Valley. The climate is Arctic, with continuous, thick permafrost and an active layer averaging about 1 m, while much of the landscape escaped glaciation during the Pleistocene. The region remains roughly 99% intact, though the Trans-Alaska Pipeline, Dalton Highway, and coal and mineral mining pose growing threats; the gyrfalcon is its flagship species.
Tundra
Zones 1b-3a
+8.5°F by 2070
49,954 sq mi
NNH tier 2
Aerial view of Kuskokwim Delta wetlands in lowland Beringia tundra.
RESOLVE 409 - Nearctic
Beringia lowland tundra
The Beringia lowland tundra is a flat, wetland-rich tundra ecoregion along the Bering Sea coast of western Alaska, from Bristol Bay and the Yukon-Kuskokwim Delta north to Kotzebue Sound and the Seward Peninsula, including offshore islands such as St. Lawrence. Lakes and ponds cover nearly a quarter of the area, and sedge- and grass-dominated wet meadows give way to dwarf-shrub heath and crowberry on better-drained, sloping ground. The subarctic climate brings harsh winters and cool summers, with rainfall ranging from roughly 250 mm near Kotzebue Sound to far wetter conditions toward Bristol Bay. Globally important for waterbirds, it hosts the world's largest tundra swan communities, most of the emperor goose population, and is largely intact, much of it protected within refuges like the Yukon Delta National Wildlife Refuge.
Tundra
Zones 3a-5a
+10.8°F by 2070
58,987 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.
Canadian NEF Ecoprovinces - 1 ecoprovince
13.3 · Northern Coastal Mountains
Source: Agriculture and Agri-Food Canada, NEF v2.2 (Open Government Licence - Canada).

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.
States and provinces

Educator packet

Region packet
Pacific Coastal Mountain icefields and tundra educator packet
The Pacific Coastal Mountain icefields and tundra is a tundra ecoregion of the Coast Ranges, stretching from south-central Alaska's Kenai Peninsula through British Columbia and into the Yukon, with elevations from sea level to over 4,500 m. Its extensive glaciers form one of the largest nonpolar icefields in the world, and much of the terrain lies beneath ice and is largely unvegetated. Where ground is exposed, vegetation is dominated by dwarf and low shrub communities, including mountain heath and ericaceous shrubs, grading into subalpine forest and coastal rainforest at lower elevations. The climate is cold and very wet, with a mean annual temperature near -0.5°C and most precipitation falling as snow. Protected areas include Kenai Fjords and Glacier Bay National Parks and parts of the Kluane-Wrangell-St. Elias UNESCO World Heritage system.
Realm
Nearctic
Dominant biome
Tundra
Approximate area
40,974 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.). Pacific Coastal Mountain icefields and tundra (Pacific Coastal Mountain icefields and tundra). Retrieved 2026, August 20, from https://plotwright.com/regions/resolve-420
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
USDA Plant Hardiness Zone Map
Published hardiness-zone authority
One Earth
One Earth
Wikipedia
Wikimedia Foundation