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Pacific Coastal Mountains
Region profile

Pacific Coastal Mountains

Pacific Coastal Mountains is a region extending from Anchorage, Alaska, southeastwards to Stewart, British Columbia, characterized by steep, rugged mountains, a subarctic climate, diverse vegetation zones, and significant areas dedicated to parks, outdoor recreation, and resource exploration.

Zone

Forest

Common Name

Pacific Coastal Mountains

CEC Level III Code

7.1.4

CEC Level II Code

7.1 Marine West Coast Forest

Overview

About This Region

The Pacific Coastal Mountains ecoregion supports diverse pollinator communities, including bees, flies, butterflies, moths, wasps, and beetles, vital for both natural ecosystems and agriculture. Factors like habitat loss due to development and changes in land use threaten native bee populations, which are critical for the region’s fruit, berry, and vegetable crops. Incorporating native plants and reducing pesticide use are essential steps in supporting these vital species and ensuring pollination efficiency.

Region facts

At a glance

AliasesPacific Coastal Mountains, Pacific Coastal Mountain region
Geographic Range
The Pacific Coastal Mountains region extends from Anchorage, Alaska, southeastwards to Stewart, British Columbia.
Climate SnapshotThe Pacific Coastal Mountains region has a severe, mid-latitude, subarctic climate, transitional between maritime and continental influences, with a mean annual temperature of approximately -0.5°C and annual precipitation ranging from 1,000 mm to over 6,000 mm.
Terrain ProfileThe region is characterized by steep, rugged mountains rising from sea level to over 4,500 masl, capped by ice fields, with abundant arêtes, horns, cirques, and U-shaped valleys, and isolated permafrost patches in higher summits.
Vegetation CoverThe Pacific Coastal Mountains vegetation is characterized by alpine tundra above the tree line, transitioning to subalpine forests with alpine fir and mountain hemlock, and finally to closed forests of western hemlock and Sitka spruce at lower, warmer elevations.
Wildlife HabitatThe Pacific Coastal Mountains region is home to wildlife such as grizzly and black bears, mountain goats, wolves, wolverines, moose, and bald eagles.

Eco snapshot

What shapes this region

Climate pattern

  • Strong maritime influence: conditions are often moderated compared with inland areas
  • Rain, wind, and cloud cover can shape what grows well
  • Big elevation effects: higher sites are colder and have shorter growing windows
  • Microclimates (small local weather differences) are created by slope direction, tree cover, and distance from the water

Vegetation profile

The Pacific Coastal Mountains vegetation is characterized by alpine tundra above the tree line, transitioning to subalpine forests with alpine fir and mountain hemlock, and finally to closed forests of western hemlock and Sitka spruce at lower, warmer elevations.

Wildlife profile

The Pacific Coastal Mountains region is home to wildlife such as grizzly and black bears, mountain goats, wolves, wolverines, moose, and bald eagles.

Why pollinators matter here

  • Many native plants rely on insects to move pollen between flowers
  • Forest edges, openings, and gardens can provide critical nectar and pollen when the forest understory is shaded
  • Pollinators need “connected” habitat patches to move across developed areas and steep terrain
  • Nesting sites (bare soil, hollow stems, wood cavities) can be limited where landscapes are heavily mulched or over-tidied

Seasonal timing

Planting seasons

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

Seasonal timing

  • Late winter/early spring: watch for the first warm spells; early bloomers matter most
  • Spring: main planting window for many gardens; focus on building a strong base of native perennials and shrubs
  • Summer: maintain watering for new plants; add “bridge” bloomers for mid-season nectar
  • Late summer/fall: add late bloomers; leave seed heads and stems for wildlife; plant when soils are workable

Quick seasonal checklist

  • Choose a sunny, wind-sheltered spot (even a balcony can work)
  • Aim for 3 bloom periods: early, mid, late
  • Plant in clumps so pollinators can find flowers easily
  • Keep some bare ground and some stems/wood for nesting
  • Avoid pesticides and “weed-and-feed” products

Yearly needs

Pollinator calendar

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

Late winter/early springEarly nectar/pollen; safe shelter as insects become activePlant/maintain early-blooming natives; leave some leaf litter and stems until warmer weather settles
SpringSteady bloom; nesting sites for solitary beesAdd a mix of flowers + a few shrubs; keep a small patch of bare, well-drained soil; avoid pesticides
SummerReliable nectar during warm/dry spells; water accessAdd mid-season bloomers; water new plantings; provide a shallow water dish with stones for landing
Late summer/fall“Last chance” nectar/pollen; energy for overwinteringPlant late bloomers; avoid deadheading everything; leave seed heads and stems standing
WinterUndisturbed shelter (in stems, soil, leaf litter, wood)Don’t over-tidy; keep some natural debris; plan next season’s bloom sequence

Keystone plants

Keystone plants by season

Mix early, mid, and late bloomers so pollinators always find food.

Early Bloom

  • Red-flowering currant
  • Salmonberry
  • Pacific bleeding heart
  • Oregon grape
  • Western serviceberry
  • Nootka rose
  • Common yarrow
  • Douglas aster
  • Pearly everlasting
  • Fireweed

Mid-Season Bloom

Late-Season Bloom

  • Goldenrod
  • Asters (native)
  • Gumweed

Seed mix concept

A Billion Small Steps Seed mix

A simple way to plan a pollinator patch is to think in three layers of bloom:

Spring starter

Spring starter: early flowers (often shrubs and early perennials) to help pollinators as they first become active.

Summer bridge

Summer bridge: dependable mid-season bloomers that carry pollinators through the main growing season.

Fall finisher

Fall finisher: late-season flowers (often asters/goldenrods) that provide crucial end-of-season fuel.

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

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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Blackberries & raspberries

Blackberries and raspberries (genus Rubus) are flowering bramble shrubs that can feed pollinators in bloom and people later with tasty berries—great for yards, school gardens, and even large containers with support.

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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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Buttonbush (*Cephalanthus* spp.)

Buttonbush

Buttonbush is a wetland shrub known for its round, pincushion-like flower clusters that draw in many pollinators. It’s a great choice for rain gardens, pond edges, and any spot that stays consistently moist.

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California lilac (*Ceanothus* spp.)

California lilac

California lilac (Ceanothus) is a flowering shrub known for clouds of blue blooms that can be a big draw for pollinators when it’s planted in the right spot.

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Camas (*Camassia* spp.)

Camas

Camas (Camassia spp.) is a spring-blooming bulb with starry blue-to-purple flowers that can light up sunny meadows and garden beds while offering early-season nectar and pollen for visiting insects.

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Currants & gooseberries (*Ribes* spp.)

Currants & gooseberries

Currants and gooseberries are Ribes shrubs that offer early-season flowers for pollinators and later berries for people and wildlife. They’re a great choice for edible landscapes, mixed borders, and small yards where you want a plant that does more than one job.

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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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Hyssops (*Agastache* spp.)

Hyssops

Hyssops (Agastache) are fragrant, long-blooming wildflowers that are easy to grow and popular with many pollinators. They’re a great choice for sunny gardens, schoolyards, and even large containers.

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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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Milkweeds (*Asclepias* (genus))

Milkweeds

Milkweeds are tough, nectar-rich wildflowers in the genus Asclepias that can turn a garden bed, schoolyard edge, or even a sunny pot into a pollinator stop.

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Penstemons (*Penstemon* (genus))

Penstemons

Penstemons (beardtongues) are hardy, flower-filled wildflowers that bring bright color and steady nectar to gardens and containers, especially in sunny spots with well-drained soil.

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Phacelias (*Phacelia* spp.)

Phacelias

Phacelias are easygoing wildflowers in the genus Phacelia, known for their nectar-rich blooms that can bring lots of pollinator activity to gardens, schoolyards, and even containers.

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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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Serviceberries (*Amelanchier* (genus))

Serviceberries

Serviceberries (genus Amelanchier) are small trees with early-season blossoms, edible berries, and strong wildlife value—an easy way to add beauty and pollinator support to a yard, school garden, or even a large container.

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Sunflowers (*Helianthus* spp.)

Sunflowers

Native sunflowers are bright, tough wildflowers in the genus Helianthus that feed pollinators and add cheerful color from mid-season into fall.

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Wild bergamot & bee balms (*Monarda* spp.)

Wild bergamot & bee balms

Wild bergamot and other bee balms (the genus Monarda) are easygoing native wildflowers known for their shaggy, pom‑pom blooms that draw in lots of pollinators. They’re a great choice when you want long-lasting summer color and a plant that feels lively with buzzing visitors.

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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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Brushfoots (Family Nymphalidae)

Brushfoots

Many brushfoots move pollen between flowers as they feed, and their caterpillars are part of healthy food webs.

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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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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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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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Leafcutter bees (Genus Megachile)

Leafcutter bees

They move pollen between flowers while foraging, helping many wild plants and garden plants set seed and fruit.

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Mason bees (Genus Osmia)

Mason bees

They move pollen between flowers while foraging, helping many wild plants and garden crops set seed and fruit.

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Mining bees (Genus Andrena)

Mining bees

They move pollen between flowers while foraging, helping many wild plants and garden plants set seed and fruit.

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Paper wasps (Genus Polistes)

Paper wasps

They can move pollen while drinking nectar, and they also help control many plant-eating insects.

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Silkmoths (giant moths) (Family Saturniidae)

Silkmoths (giant moths)

They’re part of healthy food webs and plant communities, and their caterpillars depend on a wide range of native trees and shrubs.

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Skippers (Family Hesperiidae)

Skippers

Skippers visit many flowers for nectar and can help move pollen between blooms while they feed.

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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 beetles (Family Cantharidae)

Soldier beetles

Many adults visit flowers and can move pollen between blooms, while also helping control some garden pests.

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Swallowtails (Family Papilionidae)

Swallowtails

Adult swallowtails visit many flowers for nectar and can help move pollen between blooms as they feed.

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Sweat bees (Family Halictidae)

Sweat bees

They help move pollen between flowers in gardens, parks, and natural areas, supporting seed and fruit production.

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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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