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Klamath Mountains
Region profile

Klamath Mountains

Klamath Mountains is a physically and biologically diverse ecoregion with a mild, mid-latitude Mediterranean climate, supporting a mix of northern Californian and Pacific Northwest conifers and hardwoods, characterized by rugged, deeply dissected mountainous terrain and utilized primarily for forestry and recreation.

Zone

Interior

Common Name

Klamath Mountains

CEC Level III Code

6.2.11

CEC Level II Code

6.2 Western Cordillera

Overview

About This Region

The Klamath Mountains ecoregion is a biodiversity hotspot known for its unique and endemic plant species, including specialized habitats like ultramafic soils which support diverse flora. These rich plant communities, featuring various conifers and flowering plants, provide essential food and habitat for pollinators. However, land uses such as forestry, farming, grazing, and mining, along with exposure to climate variability (e.g., warmer summers), can impact native vegetation and pollinator health. Conservation efforts focus on protecting these complex ecosystems and maintaining the habitats vital for sustained pollinator populations.

Region facts

At a glance

AliasesKlamath Mountains, CEC 6.2.11
Geographic Range
This physically and biologically diverse ecoregion occurs between the Cascades (6.2.7) and the Coast Range (7.1.8) in northwestern California and southwestern Oregon.
Climate SnapshotThe Klamath Mountains ecoregion has a mild, mid-latitude Mediterranean climate with warm, drought-ridden summers and mild winters, experiencing a mean annual temperature between approximately 5°C and 14°C and mean annual precipitation of 1,438 mm.
Terrain ProfileThe Klamath Mountains are characterized by rugged, highly dissected, and deeply dissected mountainous terrain with steep slopes, where elevations range from approximately 120 m to over 2,600 masl.
Vegetation CoverThe Klamath Mountains support a diverse mix of northern Californian and Pacific Northwest conifers and hardwoods, including mixed conifer forests with Douglas fir and various pines, along with Oregon oak woodlands.
Wildlife HabitatThe Klamath Mountains are home to a diverse array of wildlife, including black bear, Roosevelt elk, black-tailed deer, various birds of prey like the peregrine falcon and northern spotted owl, anadromous fish, and numerous reptiles and amphibians.

Eco snapshot

What shapes this region

Climate pattern

  • Big microclimate differences (small local weather differences) between sunny slopes, shaded canyons, and river bottoms.
  • Many areas have cooler/wetter seasons and drier summers, but timing varies by site.
  • Wind exposure and thin soils can make some gardens dry out quickly.

Vegetation profile

The Klamath Mountains support a diverse mix of northern Californian and Pacific Northwest conifers and hardwoods, including mixed conifer forests with Douglas fir and various pines, along with Oregon oak woodlands.

Wildlife profile

The Klamath Mountains are home to a diverse array of wildlife, including black bear, Roosevelt elk, black-tailed deer, various birds of prey like the peregrine falcon and northern spotted owl, anadromous fish, and numerous reptiles and amphibians.

Why pollinators matter here

  • Pollinators help native wildflowers and shrubs reproduce, supporting food webs.
  • Mountain landscapes can have shorter bloom windows at higher elevations—so bloom timing matters.
  • River corridors and sunny openings can act like “flower highways” when planted well.
  • Droughty summers in some sites make late-season flowers especially valuable.

Seasonal timing

Planting seasons

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

Seasonal timing

  • Cool/wet season: Often a good time for planting many natives so roots establish before summer stress.
  • Spring: Great for adding starts (young plants) and watching for early bloom gaps.
  • Summer: Focus on watering new plantings (if needed) and adding heat-tolerant bloomers.
  • Late summer/fall: Often ideal for planting perennials and shrubs where winters are mild enough for root growth.

Quick seasonal checklist

  • Choose plants for sun vs. part shade and dry vs. moist spots.
  • Aim for 3+ plants blooming in each main season.
  • Leave some areas a bit “messy” for nesting and shelter.
  • Keep a simple watering plan for the first year (site-dependent).

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 bloomers; leave some leaf litter and stems until warmer weather settles
SpringSteady bloom; nesting sites (soil, stems, cavities)Add a cluster of spring-flowering natives; keep a small patch of bare, well-drained soil
SummerReliable flowers during heat/dry periods; water sourcesPlant drought-tolerant summer bloomers; provide a shallow water dish with stones for landing
Late summer/fall“Finish-line” nectar/pollen to build reservesPrioritize late-blooming natives; avoid deadheading everything—leave some seedheads and stems
Winter or Dry SeasonShelter from cold/wet or drought; undisturbed nestingDon’t over-tidy; keep brush/leaf piles in a corner; plan next season’s bloom sequence

Seed mix concept

A Billion Small Steps Seed mix

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

Spring starter

Spring starter: early bloomers that “wake up” the season (often shrubs and bulbs/perennials).

Summer bridge

Summer bridge: reliable mid-season flowers that carry pollinators through warmer, drier weeks.

Fall finisher

Fall finisher: late-season bloomers (like asters/goldenrods/rabbitbrush types) that provide crucial end-of-year 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

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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