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Arkansas Valley
Region profile

Arkansas Valley

Arkansas Valley is a region of plains and hills with valleys and ridges located in eastern Oklahoma and western Arkansas, characterized by a mild, humid subtropical climate, oak savanna and oak-hickory-pine forests, and land uses including forestry, agriculture, and livestock grazing.

Zone

Interior

Common Name

Arkansas Valley

CEC Level III Code

8.4.7

CEC Level II Code

8.4 Ozark, Ouachita-Appalachian Forests

Overview

About This Region

The Arkansas Valley is vital for regional biodiversity, but its pollinators face challenges. Habitat loss from human development and agricultural intensification, coupled with the misuse of pesticides, threatens native species. Climate change, leading to increased extreme weather and shifts in plant-pollinator timing (phenology), further compounds these risks. Conservation efforts focus on restoring native habitats and implementing pollinator-friendly practices to mitigate these widespread threats.

Region facts

At a glance

AliasesArkansas Valley, CEC 8.4.7
Geographic Range
The Arkansas Valley region lies in eastern Oklahoma and western Arkansas, situated south of the Boston Mountains and north of the Ouachita Mountains.
Climate SnapshotThe Arkansas Valley ecoregion has a mild, mid-latitude, humid subtropical climate with mild winters, hot summers, and a mean annual precipitation of 1,160 mm.
Terrain ProfileThe Arkansas Valley consists of plains with hills and some open low mountains, featuring a mix of valleys and ridges with elevations ranging from 75 to 839 meters.
Vegetation CoverNatural vegetation in the Arkansas Valley included oak savanna and oak-hickory-pine forests, with floodplains featuring bottomland oaks, sycamore, sweetgum, willow, eastern cottonwood, green ash, and elm.
Wildlife HabitatRegional wildlife in the Arkansas Valley includes white-tailed deer, coyote, bobcat, swamp rabbit, beaver, raccoon, armadillo, wild turkey, mourning dove, and box turtle.

Eco snapshot

What shapes this region

Climate pattern

  • A long warm season often supports a long flowering window, but timing varies year to year.
  • River corridors can moderate temperatures and moisture compared with nearby open sites.
  • Microclimates (small local weather differences) show up around water, buildings, tree cover, and slope direction.

Vegetation profile

Natural vegetation in the Arkansas Valley included oak savanna and oak-hickory-pine forests, with floodplains featuring bottomland oaks, sycamore, sweetgum, willow, eastern cottonwood, green ash, and elm.

Wildlife profile

Regional wildlife in the Arkansas Valley includes white-tailed deer, coyote, bobcat, swamp rabbit, beaver, raccoon, armadillo, wild turkey, mourning dove, and box turtle.

Why pollinators matter here

  • Pollinators support wildflowers and many fruiting plants in natural and human landscapes.
  • River valleys can act as movement corridors, helping pollinators spread between habitats.
  • Hot, dry periods can create mid-summer nectar gaps unless gardens include heat-tolerant bloomers.
  • Small patches add up—especially when neighborhoods and schools plant in ways that overlap bloom times.

Seasonal timing

Planting seasons

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

Seasonal timing

  • Late winter / early spring: Plan your patch, prep soil lightly, and start early bloomers where possible.
  • Spring: Main planting window for many natives (especially transplants); aim to establish roots before summer heat.
  • Summer: Focus on watering new plants, adding mulch carefully (not over-smothering), and planting heat-tough species if needed.
  • Late summer / fall: Great time for many perennials; add fall bloomers to prevent late-season food shortages.
  • Winter: Leave stems and leaf litter; do “gentle cleanup” only.

Quick seasonal checklist

  • Choose at least 3 bloom windows (early, mid, late).
  • Plant in clumps (easier for pollinators to find).
  • Add one nesting feature (bare soil patch, stems, or a small brush/leaf pile).
  • Keep it pesticide-free.

Yearly needs

Pollinator calendar

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

Late winter / early springEarly nectar and pollen; safe places to warm up and nestPlant/maintain early bloomers; leave some leaf litter and stems; avoid “spring spraying”
SpringLots of flowers; nesting materials and nest sitesPlant a mix of native flowers; keep some bare soil; add shallow water with stones for landing
SummerContinuous bloom; water during heat; shade and shelterAdd heat-tolerant bloomers; water new plants; keep blooms coming in sunny spots
Late summer / fallHigh-energy nectar for migration and overwintering prepPrioritize late bloomers; avoid fall pesticide use; leave seed heads and stems
WinterShelter for overwintering insects; undisturbed habitatDon’t over-tidy; leave stems standing; keep a small “messy corner” for habitat

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 (including flowering shrubs/small trees and early perennials) to feed emerging pollinators.

Summer bridge

Summer bridge: heat-tolerant, long-blooming natives that prevent a mid-season nectar gap.

Fall finisher

Fall finisher: asters and goldenrods (and other late bloomers) to support late-season feeding and overwintering prep.

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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