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Region profile

Peel River and Nahanni Plateaus

Peel River and Nahanni Plateaus is an ecoregion extending along the northerly Yukon and Northwest Territories border and the foothills of the Mackenzie Mountains, characterized by long, very cold winters, short cool summers, continuous permafrost, and predominant vegetation of open, very stunted black spruce and tamarack stands.

Zone

Interior

Common Name

Peel River and Nahanni Plateaus

CEC Level III Code

3.2.3

CEC Level II Code

3.2 Taiga Cordillera

Overview

About This Region

The Peel River and Nahanni Plateaus region, spanning parts of the Yukon and Northwest Territories, features a mix of boreal forest and tundra with long, very cold winters and short, cool summers (mean annual temp. is approx. -6°C). The forests are primarily spruce, larch, birch, and aspen. Land use includes trapping, hunting, and fishing, with some recreation and tourism. Habitat fragmentation and climate change are potential factors affecting pollinators in this diverse ecological crossroads.

Region facts

At a glance

AliasesPeel River and Nahanni Plateaus, CEC 3.2.3, Peel River & Nahanni Plateaus, Peel–Nahanni Plateaus, Peel River–Nahanni Plateaus
Geographic Range
This ecoregion extends along parts of the northerly Yukon and Northwest Territories border and along the foothills of the Mackenzie Mountains.
Climate SnapshotThe Peel River and Nahanni Plateaus ecoregion is marked by long, very cold winters (mean -22.5°C) and short cool summers (mean 10°C), with mean annual precipitation ranging from 200 to 500 mm.
Terrain ProfileThe Peel River and Nahanni Plateaus region is a hilly to plateau-like area with elevations typically ranging from 1,100 to 1,200 masl, covered by thin to discontinuous glacial drift and organic deposits, and characterized by continuous permafrost.
Vegetation CoverThe predominant vegetation consists of open, very stunted stands of black spruce and tamarack with white spruce, and a ground cover of dwarf birch, willow, ericaceous shrubs, cottongrass, lichen, and moss, with low shrub tundra also being common.
Wildlife HabitatThe Peel River and Nahanni Plateaus are home to characteristic wildlife such as caribou, moose, grizzly and black bear, wolf, coyote, red fox, and lynx, along with birds like raven, osprey, spruce grouse, and snow and Canada geese.

Eco snapshot

What shapes this region

Climate pattern

  • Strong seasonality: a long winter and a compressed summer flowering window.
  • Big microclimate effects (small local weather differences) between sunny slopes, shaded areas, and river valleys.
  • Exposure (wind) and soil moisture can be as important as temperature for what grows well.

Vegetation profile

The predominant vegetation consists of open, very stunted stands of black spruce and tamarack with white spruce, and a ground cover of dwarf birch, willow, ericaceous shrubs, cottongrass, lichen, and moss, with low shrub tundra also being common.

Wildlife profile

The Peel River and Nahanni Plateaus are home to characteristic wildlife such as caribou, moose, grizzly and black bear, wolf, coyote, red fox, and lynx, along with birds like raven, osprey, spruce grouse, and snow and Canada geese.

Why pollinators matter here

  • Short summers mean pollinators need reliable, concentrated bloom periods.
  • River corridors and sheltered sites can act like refueling lanes for insects.
  • Native flowering plants support native pollinators and help maintain resilient food webs.
  • Avoiding pesticides matters because recovery can be slower in cold regions.

Seasonal timing

Planting seasons

Timing varies by microclimate; use this as a flexible guide.

Seasonal timing

  • After snowmelt / soil workable: focus on site prep, adding compost where appropriate, and planting hardy perennials.
  • Early growing season: plant plugs/transplants; start watering routines if rainfall is limited.
  • Peak summer: prioritize watering, mulching, and keeping blooms going.
  • Late season: plant hardy perennials where feasible; leave stems/leaf litter for overwintering.

Quick seasonal checklist

  • Choose a sheltered, sunny spot (or the sunniest you have).
  • Plant at least 3 bloom times (early/mid/late).
  • Add a shallow water dish with stones for landing.
  • Leave some bare soil and some standing stems for nesting.
  • Skip pesticides—especially “systemic” products.

Yearly needs

Pollinator calendar

What pollinators need throughout the year, and what to do about it.

Late winter / early springSafe overwintering sites; early food as soon as conditions allowLeave stems/leaf litter in place; plan for early-blooming natives; avoid spring “clean-up” that removes shelter
SpringEarly nectar/pollen; nesting sites coming onlinePlant early bloomers; keep a small patch of bare, well-drained soil; add a few hollow stems/bee habitat bundles
SummerContinuous bloom; water; shade/shelter during hot or windy spellsAim for a “no gaps” bloom sequence; water during dry spells; mulch lightly (don’t smother all bare soil)
Late summer / fallLate flowers; energy for overwintering; undisturbed habitatPlant late bloomers; stop deadheading some plants; leave seedheads and stems; avoid fall pesticide use
WinterProtected shelter from cold and windDon’t cut everything down; keep natural debris in a corner; mark your garden so it isn’t “tidied” mid-winter

Seed mix concept

A Billion Small Steps Seed mix

In a short-season northern region, a “seed mix” approach works best when it’s designed for cold-tolerant natives and focuses on a fast, reliable bloom sequence.

Spring starter

Spring starter: early bloomers (often shrubs/groundcovers) that provide the first food.

Summer bridge

Summer bridge: mid-season flowers that carry the main nectar/pollen supply.

Fall finisher

Fall finisher: late bloomers that help pollinators fuel up before winter.

What You Can Do

Make a difference for native habitats.

Turn this knowledge into action. Whether you plant a single pot or a whole garden, you are building a vital bridge for local biodiversity.

Join the movement to restore our shared habitats.

Native plants

Plants that thrive in this region

Alders (*Alnus* spp.)

Alders

Alders are fast-growing trees in the genus Alnus that are especially useful in damp spots and along edges where you want quick cover and early-season pollen for insects.

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Asters (*Symphyotrichum* spp.)

Asters

Asters are late-season wildflowers that bring a burst of daisy-like blooms when many gardens are winding down, making them a reliable choice for pollinator-friendly planting.

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Birches (*Betula* (genus))

Birches

Birches are graceful trees in the genus Betula, known for their often light-colored bark and early-season pollen and catkins that support springtime insects.

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Blueberries & huckleberries (*Vaccinium* (genus))

Blueberries & huckleberries

Blueberries and huckleberries (genus Vaccinium) are berry-producing shrubs with spring flowers that can support pollinators and later feed people and wildlife—great for gardens, schoolyards, and even large containers.

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Clovers (*Trifolium* spp.)

Clovers

Clovers are small, easygoing plants in the genus Trifolium that can add nectar and pollen to gardens, lawns, and pots while helping cover bare soil.

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Fireweed (*Chamerion* spp.)

Fireweed

Fireweed is a tough, fast-growing wildflower in the genus Chamerion that brings bright pink blooms and lots of pollinator activity to sunny, open spaces.

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Fleabanes (*Erigeron* spp.)

Fleabanes

Fleabanes (genus Erigeron) are easygoing wildflowers with daisy-like blooms that can brighten gardens, schoolyards, and balcony pots while offering steady nectar and pollen for many small pollinators.

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Goldenrods (*Solidago* spp.)

Goldenrods

Goldenrods are tough, sunny wildflowers in the genus Solidago that light up late-season gardens with golden blooms and provide reliable nectar and pollen when many other flowers are fading.

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Kinnikinnick (Arctostaphylos spp.)

Kinnikinnick

Kinnikinnick is a tough, low-growing evergreen groundcover in the genus Arctostaphylos (often called bearberry) that forms a tidy mat and offers small spring flowers followed by red berries.

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Manzanitas (West) (Arctostaphylos spp.)

Manzanitas

Manzanitas are tough, beautiful western shrubs with urn-shaped flowers that can feed early-season pollinators and evergreen leaves that keep gardens looking good year-round.

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Poplars, aspens & cottonwoods (*Populus*)

Poplars, aspens & cottonwoods

Poplars, aspens, and cottonwoods (genus Populus) are fast-growing trees best known for their fluttering leaves and soft “cottony” seeds. They can support early-season pollinators with spring catkins, but they’re also big, thirsty, and often short-lived in small yards—so they’re best chosen with space and roots in mind.

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Rushes (*Juncus* spp.)

Rushes

Rushes are tough, grass-like wetland plants (genus Juncus) that thrive in damp soil and help create calm, sheltered habitat at the edges of ponds, rain gardens, and low spots.

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Sedges (*Carex* (genus))

Sedges

Sedges (genus Carex) are grass-like plants that form tidy clumps and thrive in many garden conditions, especially where soil stays a bit damp. They add texture, cover bare ground, and can support small wildlife by providing shelter and nesting material.

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Willowherbs (*Epilobium* spp.)

Willowherbs

Willowherbs (genus Epilobium) are easygoing wildflowers that pop up in sunny, open spots and offer simple, nectar-rich blooms that many small pollinators can use.

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Willows (*Salix* spp.)

Willows

Willows are fast-growing trees and shrubs in the genus Salix that offer some of the earliest pollen and nectar of the year, making them a strong choice for pollinator-friendly yards, parks, and school grounds.

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Yarrow (*Achillea millefolium*)

Yarrow

Yarrow is a tough, easygoing wildflower that brings long-lasting blooms and steady pollinator visits to gardens, schoolyards, and even containers.

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Pollinators

Pollinators active in this region

Bee flies (Family Bombyliidae)

Bee flies

Adults visit flowers for nectar and can move pollen between blooms; their presence is a sign of diverse, functioning habitats.

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Bumble bees (Genus Bombus)

Bumble bees

Bumble bees are important pollinators of many wildflowers and garden plants, helping ecosystems and food crops reproduce.

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Dance flies (Family Empididae)

Dance flies

Many visit flowers for nectar and can move pollen between blooms while also playing important roles in local food webs.

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Flower flies / hoverflies

Adults visit flowers for nectar and pollen, and many species’ larvae help keep plant-eating pests in check.

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Geometer moths (Family Geometridae)

Geometer moths

Adults can help move pollen as they nectar at flowers, and their caterpillars are an important part of local food webs.

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Hawk / sphinx moths (Family Sphingidae)

Hawk / sphinx moths

They can move pollen between flowers while feeding on nectar, especially for blooms that open or scent up in the evening.

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Small nectar moths (micro-moths) (Multiple families (varies))

Small nectar moths (micro-moths)

Many small moths move pollen while feeding on nectar, supporting wild plants and garden blooms—especially in the evening and at night.

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Soldier flies (Family Stratiomyidae)

Soldier flies

Many adults visit flowers for nectar and can move pollen between blooms while feeding.

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Whites & sulphurs (Family Pieridae)

Whites & sulphurs

They visit a wide range of flowers for nectar and can help move pollen between blooms as they feed.

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