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Region profile

North Central Hardwood Forests

North Central Hardwood Forests is a transitional ecoregion in central Minnesota, Wisconsin, and a small part of Michigan, characterized by a humid continental climate, diverse hardwood forest types, and a mosaic of forestland, agriculture, and urban areas.

Zone

Prairie

Common Name

North Central Hardwood Forests

CEC Level III Code

8.1.4

CEC Level II Code

8.1 Mixed Wood Plains

Overview

About This Region

The North Central Hardwood Forests ecoregion, spanning parts of Minnesota, Wisconsin, and Michigan, is vital for diverse wildlife. Pollinators here face threats from habitat loss due to development, the misuse of agricultural chemicals, and climate change, which disrupts flowering and migration patterns. Conserving the remaining hardwood forests and promoting sustainable practices are key steps for “A Billion Small Steps.”

Region facts

At a glance

AliasesNorth Central Hardwood Forests, CEC 8.1.4, North Central Hardwood Forests (North-Central Hardwood Forests, North Central Hardwoods)
Geographic Range
The North Central Hardwood Forests ecoregion is a transitional area in central Minnesota, Wisconsin, and a small part of Michigan, situated between the forested Northern Lakes and Forests to the north and agricultural regions to the south.
Climate SnapshotThe North Central Hardwood Forests ecoregion has a severe, mid-latitude, humid continental climate, characterized by warm summers and severe, snowy winters, and a mean annual temperature between 5°C and 7°C.
Terrain ProfileThe topography features nearly level to rolling till plains, lacustrine basins, outwash plains, and rolling to hilly moraines.
Vegetation CoverThe dominant forest types in this region include oak savanna, oak-hickory forests, maple-basswood forests, and northern hardwoods of maple, beech, and birch.
Wildlife HabitatWhile bison, elk, and wolf were once present, the region currently supports a variety of animals including white-tailed deer, coyote, beaver, raccoon, wild turkey, Canada goose, and several fish species like northern pike and walleye.

Eco snapshot

What shapes this region

Climate pattern

  • Strong seasonal shifts; timing of bloom and insect activity can vary by microclimate (small local weather differences).
  • Lakes, rivers, tree canopy, and urban heat can all change local conditions.
  • Wind exposure and shade can be as important as temperature for plant performance.

Vegetation profile

The dominant forest types in this region include oak savanna, oak-hickory forests, maple-basswood forests, and northern hardwoods of maple, beech, and birch.

Wildlife profile

While bison, elk, and wolf were once present, the region currently supports a variety of animals including white-tailed deer, coyote, beaver, raccoon, wild turkey, Canada goose, and several fish species like northern pike and walleye.

Why pollinators matter here

  • Pollinators support wildflowers, shrubs, and many fruiting plants in gardens and natural areas.
  • Forest edges and sunny openings can be high-value feeding zones when they have diverse native flowers.
  • Urban and suburban landscaping can create “bloom deserts” if it’s mostly lawn and non-flowering shrubs.
  • Pesticide use and over-tidying can remove both food and nesting sites.

Seasonal timing

Planting seasons

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

Seasonal timing

  • Early season: Focus on early-blooming natives and flowering shrubs; this is when many pollinators are food-stressed.
  • Mid-season: Keep a steady supply of blooms in full sun areas; water new plantings as they establish.
  • Late season: Prioritize late-blooming natives; this supports pollinators building reserves before winter.
  • Dormant season: Plan, source native plants, and leave stems/leaf litter for shelter.

Quick seasonal checklist

  • Add at least 3 different bloom times (early/mid/late).
  • Plant in clumps (easier for pollinators to find).
  • Keep one area a little “messy” for nesting and shelter.
  • Choose native plants suited to your sun/shade and soil moisture.

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 temperatures swingPlant/plan for early bloomers; leave some leaf litter and standing stems; avoid spring pesticide applications
SpringContinuous flowers; nesting sites (soil, stems, cavities)Add spring-blooming natives; keep some bare, well-drained soil; install/maintain simple cavity habitat (e.g., bundles of hollow stems)
SummerReliable blooms; water during dry spells; shade/cover nearbyPlant mid-summer natives; include a shallow water source with landing stones; keep a mix of heights and flower shapes
Late summer/fallLate blooms; undisturbed areas to prepare for winterPlant late-season natives; delay heavy cleanup; leave seedheads and stems where safe
WinterProtected overwintering spots (stems, leaf litter, ground cover)Leave stems standing; keep a “no-mow/no-rake” corner; plan next year’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 of bloom:

Spring starter

Spring starter: early flowers (including shrubs/woodland-edge plants) to help pollinators coming out of winter.

Summer bridge

Summer bridge: dependable mid-season bloomers that carry the garden through the busiest foraging months.

Fall finisher

Fall finisher: asters and goldenrods (and other late bloomers) to support end-of-season feeding and winter preparation.

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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Blazing stars

Blazing stars (Liatris) are upright, purple-pink wildflowers that bloom in showy spikes and are well-loved by many pollinators. They’re a strong choice for sunny gardens, borders, and meadow-style plantings.

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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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Coneflowers (*Echinacea* (genus))

Coneflowers

Coneflowers (Echinacea) are tough, long-blooming wildflowers that bring steady color and reliable nectar and pollen to gardens, schoolyards, and even large containers.

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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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Ironweeds (*Vernonia* (genus))

Ironweeds

Ironweeds are tall, purple-blooming wildflowers in the genus Vernonia that bring late-season color and steady nectar to pollinator gardens.

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Joe-Pye weeds (*Eutrochium* spp.)

Joe-Pye weeds

Joe-Pye weeds are tall, late-season native wildflowers in the genus Eutrochium that bring big, fluffy flower clusters to gardens and give pollinators a reliable place to feed when many other plants are winding down.

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Maples

Maples are familiar shade trees that offer early-season flowers and later seeds, supporting a range of pollinators and adding strong structure to yards, school grounds, and streetscapes.

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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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Mountain mints (Pycnanthemum (genus))

Mountain mints

Mountain mints are tough, fragrant native wildflowers that bloom in summer and are famous for drawing in a busy mix of pollinators. They’re easy to grow, handle a range of garden conditions, and make a great “plant it and watch it” choice for pollinator patches.

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Oaks

Oaks are long-lived trees that can anchor a yard, school ground, or park with shade, structure, and lots of seasonal interest. Many pollinators use oak flowers in spring, and the tree’s leaves and bark support a wide web of life over time.

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Prairie coneflowers (*Ratibida* spp.)

Prairie coneflowers

Prairie coneflowers (Ratibida) are tough, sunny wildflowers with drooping petals and a bold cone-shaped center that pollinators can easily find. They’re a great choice for low-fuss gardens, schoolyards, and naturalized patches where you want long-lasting summer color.

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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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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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