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Canadian Aspen forests and parklands
Canadian Aspen forests and parklands
RESOLVE 386
The Canadian Aspen forests and parklands — the transitional belt between the northern prairies to the south and the boreal forest to the north, covering southern Saskatchewan, southern + central Alberta, southwestern Manitoba, and small extensions into Montana and the Dakotas. Quaking aspen groves interspersed with grassland; the ecoregion functioned historically as a fire-managed mosaic, and woody encroachment under fire suppression has shifted the balance toward more closed aspen forest.
Canadian Aspen forests and parklands location on world map
Marker placed inside the RESOLVE 2017 polygon at 49.4°N, 103.2°W.
Climate snapshot for this ecoregion
NRCan zone range (now)
0a-3b
NRCan
What seed packets and nursery tags reference. Coldest-day survival semantics.
Plotwright projection (2041–2070)
7a-9a
Plotwright
Where CHELSA models say the typical winter month is heading.
Average warming this ecoregion is on track for: +6.7°F by mid-century. SSP3-7.0 (current trajectory) · CHELSA v2.1 bio06 sampled across 10 of 10 points within this ecoregion's bounding box.
Projected mid-century warming here is among the largest in the temperate Western Hemisphere (~4 °C under SSP3-7.0); the parkland-boreal boundary is projected to advance north substantially, with the grassland-parkland boundary moving in turn.
Aspen dieback across the southern Alberta + Saskatchewan reach tracks the same warming-amplified drought signal seen in Wasatch and Colorado aspen.
Garden-relevant: cold-hardy prairie + parkland natives (Saskatoon serviceberry, buffaloberry, prairie sage, native flax) carry forward strongly; cold-hardiness ceases to be the binding constraint while summer drought tolerance becomes more important.
At a glance
States / provinces
Alberta, Saskatchewan, Manitoba, Montana, North Dakota
Dominant biome
Temperate Grasslands, Savannas & Shrublands
Realm
Nearctic
Approximate area
126,247 sq mi
Elevation range
800 – 3,500 ft
Climate type
Humid continental, cool summer (Köppen Dfb)
Conservation tier
Nature Imperiled (Dinerstein NNH 4)
About the temperate grasslands, savannas & shrublands biome
Temperate prairies, steppes, and pampas of grasses and forbs with few trees, under continental climates of hot summers and cold winters. Their deep, fertile soils have made them among the most extensively converted biomes for agriculture.
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) — 1 sub-region
46 · Northern Glaciated Plains
Source: USGS / EPA via Omernik (1987).
What's native here
Catalog plants whose Lady Bird Johnson Wildflower Center native-distribution range overlaps the 5-state/province roster for this ecoregion. Distinct from the “suited” section below — these are plants that belong here, not just plants that will grow here.
Grain caveat: native here means “native to at least one state / province this ecoregion crosses,” not necessarily native to this ecoregion's specific habitat. A plant tied to wet meadows that crosses Ontario will surface for any Ontario-spanning ecoregion. Finer per-ecoregion native-status data is a future arc.
Catalog plants suited to this ecoregion
Computed from each plant's stated USDA zone range against this ecoregion's NRCan Plant Hardiness Zone 1981-2010 GeoTIFF published current zone range, with the CHELSA mid-century warming delta applied for the projection. Plants whose stated range falls outside both the current and projected zone end up dropped; the rest land in one of the three buckets below.
Climate-resilient picks · 266
These plants fit this ecoregion today AND remain in range under the mid-century SSP3-7.0 projection. Lead with these for a planting that holds up as the climate shifts.
Adam's needle
Allegheny blackberry
American arborvitae
American basswood
American elderberry
American hazelnut
American holly
American hophornbeam
American persimmon
American plum
American red raspberry
American sweetgum
American sycamore
Anise hyssop
Annabelle hydrangea
Apple
Apricot
Aromatic aster
Arrowwood viburnum
Arugula
Asian persimmon
Asiatic lily
Asparagus
Autumn-joy stonecrop
Bald cypress
Bay laurel
Beach plum
Bearberry (kinnikinnick)
Bearded iris
Big bluestem
Bigleaf hydrangea
Black cherry
Black chokeberry
Black tupelo (black gum)
Black walnut
Black willow
Black-eyed Susan
Blackhaw viburnum
Bleeding heart
Bloodroot
Blue elderberry
Blue false indigo
Blue flag iris
Blue grama
Blue vervain
Blueblossom
Bok choy
Boneset
Borage
Border forsythia
Broccoli
Brussels sprouts
Bur oak
Butterfly weed
Cabbage
Calendula (pot marigold)
California fuchsia
California poppy
Camellia
Canada goldenrod
Canadian serviceberry
Cantaloupe
Cardinal flower
Carolina allspice (sweetshrub)
Catawba rhododendron
Catmint
Cauliflower
Chives
Chokecherry
Christmas fern
Cilantro
Clematis
Coast live oak
Collard greens
Comfrey
Common blue violet
Common boxwood
Common camas
Common fig
Common hackberry
Common hops
Common hyacinth
Common lilac
Common manzanita
Common milkweed
Common ninebark
Common olive
Common thyme
Common witch hazel
Common yarrow
Common zinnia
Coral bells
Cosmos
Crape myrtle
Cutleaf coneflower
Daffodil
Dahlia
Daylily
Dense blazing star
Dill
Dutch crocus
Dwarf crested iris
Eastern cottonwood
Eastern prickly pear
Eastern red cedar
Eastern redbud
Eastern white pine
English lavender
European pear
European plum
Fennel
Firecracker penstemon
Flowering dogwood
Foamflower
Fox grape
Foxglove beardtongue
Fragrant plantain lily
Fremont cottonwood
French marigold
French tarragon
Garden mum
Garden phlox
Garden rose
Garden sage
Garden salvia
Garden sorrel
Garden strawberry
Gardenia
Garlic
German chamomile
Ginkgo
Gladiolus
Globe artichoke
Golden alexanders
Golden currant
Green hawthorn
Ground cherry
Groundnut
Hairy alumroot
Hardy hibiscus
Highbush blueberry
Hollyhock
Honey locust
Indian grass
Indian pink
Japanese maple
Japanese spirea
Jujube
Kiwifruit
Lacinato kale
Lady fern
Lamb's ear
Leek
Lemon balm
Lily of the valley
Little bluestem
Lovage
Marginal wood fern
Mayapple
Maypop (purple passionflower)
Morning glory
Mountain laurel
Nasturtium
New England aster
New Jersey tea
New York ironweed
Northern maidenhair fern
Northern red oak
Northern spicebush
Oakleaf hydrangea
Okra
Oregano
Oregon grape
Oregon white oak
Ostrich fern
Pacific dogwood
Pansy
Paper birch
Parry's agave
Parsnip
Pawpaw
Peach
Pecan
Peony
Peppermint
Pinxter azalea
Pomegranate
Ponderosa pine
Potato
Prairie dropseed
Prairie smoke
Pumpkin
Purple coneflower
Pussy willow
Quince
Radish
Ramps
Red maple
Red mulberry
Red-osier dogwood
Rhubarb
River birch
River oats
Rose of Sharon
Rosemary
Russian sage
Salad burnet
Salal
Sassafras
Scarlet bee balm
Sea buckthorn
Shagbark hickory
Shasta daisy
Short-toothed mountain mint
Side-oats grama
Smooth blue aster
Snapdragon
Soapweed yucca
Southern live oak
Southern magnolia
Spearmint
Spinach
Spotted Joe-Pye weed
Stiff goldenrod
Sugar maple
Summer savory
Summersweet (sweet pepperbush)
Sunchoke
Swamp milkweed
Swamp sunflower
Sweet alyssum
Sweet cherry
Sweet corn
Sweet crabapple
Sweet Joe-Pye weed
Sweet pea
Sweet William
Sweetbay magnolia
Switchgrass
Tall verbena
Threadleaf coreopsis
Toyon
Tulip
Tulip tree (yellow poplar)
Turmeric
Turnip
Vine maple
Virginia bluebells
Virginia sweetspire
Watermelon
Weeping willow
Western redbud
Western sword fern
White clover
White oak
White wood aster
Wild bergamot
Wild columbine
Wild geranium
Wild lupine
Wild senna
Wild strawberry
Wine grape
Winterberry
Woodland phlox
Yoshino cherry
Currently suited · 4
These plants fit the ecoregion as it is today, but the mid-century projection moves them outside their stated zone range — plan for them to struggle by 2070.
Newly possible by 2070 · 8
These plants don't fit the current zone range yet, but the mid-century projection brings them into reach. Long-horizon picks for the climate-adaptation wedge.
Wildlife your native plants here support
What this surface IS — and isn't
Inferred from the relationships catalog plants native to this region have with wildlife. We don't carry direct wildlife-range data per ecoregion — this lists what your native plant palette here can support, not a verified checklist of what occurs here. Cross-check the range note on each wildlife's detail page before treating a row as a presence claim.
Only plants with structured native-distribution data contribute here. Old World cultivars and most vegetables are excluded by design — this view shows “what your native palette supports,” not “what your whole garden does.” It will grow as more plants gain native-range data.
Larval hosts · 22
Plants that caterpillars and other larvae feed on while growing.
Butterfly
Eastern tiger swallowtail
Papilio glaucus
14 native plants here: American plum, Black cherry, Black willow + 11 more
Moth
Polyphemus moth
Antheraea polyphemus
14 native plants here: American basswood, American hophornbeam, Black cherry + 11 more
Butterfly · Specialist support
Skipper butterflies
Hesperiidae (family-level entry)
11 native plants here: Big bluestem, Blue grama, Little bluestem + 8 more
Butterfly · Specialist support
Monarch butterfly
Danaus plexippus
8 native plants here: Swamp milkweed, Aromatic aster, Boneset + 5 more
Moth
Io moth
Automeris io
7 native plants here: American red raspberry, Black willow, Common hackberry + 4 more
Moth
Cecropia moth
Hyalophora cecropia
6 native plants here: Black cherry, Black willow, Chokecherry + 3 more
Butterfly
Mourning cloak
Nymphalis antiopa
6 native plants here: Black willow, Common hackberry, Eastern cottonwood + 3 more
Butterfly
Common buckeye
Junonia coenia
5 native plants here: Blue vervain, Canada goldenrod, New England aster + 2 more
Moth
Hummingbird clearwing moth
Hemaris thysbe
5 native plants here: American plum, Black cherry, Chokecherry + 2 more
Butterfly
Red-spotted purple
Limenitis arthemis astyanax
5 native plants here: Black cherry, Black willow, Chokecherry + 2 more
Butterfly
Spring azure
Celastrina ladon
5 native plants here: American plum, Black cherry, Blue elderberry + 2 more
Butterfly · Specialist support
Great spangled fritillary
Speyeria cybele
4 native plants here: Common blue violet, Anise hyssop, Blue vervain + 1 more
Moth
Imperial moth
Eacles imperialis
4 native plants here: Black walnut, Bur oak, Shagbark hickory + 1 more
Butterfly
Pearl crescent
Phyciodes tharos
4 native plants here: Aromatic aster, New England aster, Smooth blue aster + 1 more
Butterfly
Viceroy
Limenitis archippus
4 native plants here: Black willow, Eastern cottonwood, Pussy willow + 1 more
Moth
Hawkmoths
Sphingidae (family-level entry)
3 native plants here: Black cherry, Chokecherry, Wild bergamot
Moth
Luna moth
Actias luna
3 native plants here: Black walnut, Paper birch, Shagbark hickory
Butterfly
Eastern comma
Polygonia comma
2 native plants here: Common hackberry, Common hops
Butterfly
Black swallowtail
Papilio polyxenes
1 native plant here: Golden alexanders
Butterfly
Cloudless sulphur
Phoebis sennae
1 native plant here: Groundnut
Moth · Specialist support
Milkweed tussock moth
Euchaetes egle
1 native plant here: Swamp milkweed
Butterfly
Silvery checkerspot
Chlosyne nycteis
1 native plant here: Cutleaf coneflower
Collections for this ecoregion
Curated multi-plant collections whose members all fit this ecoregion's zone range — no won't-grow members smuggled in. Overall fit class shown per collection is the weakest link across its members.
Climate-resilient · 2 plants
Bright shade foundation
A part-shade starting point with shrub structure and low foliage contrast.
Annabelle hydrangea
Coral bells
+4
Climate-resilient · 8 plants
Climate-resilient natives for warming zones (eastern NA)
A pollinator-supporting palette of eastern NA natives whose USDA zone range and broad continental distribution score high on the climate-resilience composite. Every plant tolerates 6-7 USDA zones and is native across 15+ US states + multiple Canadian provinces. Holds up under the SSP3-7.0 mid-century projection without the gardener trading wildlife value for resilience.
Switchgrass
Little bluestem
Common milkweed
Black-eyed Susan
Wild bergamot
Sweet Joe-Pye weed
Cutleaf coneflower
New England aster
+2
Climate-resilient · 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
+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
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
Plotwright
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