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Southeastern Plains
Region profile

Southeastern Plains

Southeastern Plains is an interior coastal plain that stretches from Maryland in the north to Mississippi and Louisiana in the south, characterized by a mild, mid-latitude, humid subtropical climate, dissected rolling to smooth plains, and a mosaic of cropland, pasture, woodland, and forestland cover.

Zone

Prairie

Common Name

Southeastern Plains

CEC Level III Code

8.3.5

CEC Level II Code

8.3 Southeastern USA Plains

Overview

About This Region

The Southeastern Plains feature long, hot summers and a frost-free period of 200–300 days. Mean annual precipitation averages 1,358 mm. Vegetation includes longleaf pine, turkey oak, shortleaf-loblolly pine, and diverse herbaceous cover, supporting bees and other pollinators. Factors affecting pollinators include the need for diverse plants with varying bloom times and colors, as well as habitat size and proximity. Conserving these habitats is vital for crops like peaches, strawberries, and watermelon.
Southeastern Plains
https://www.inaturalist.org/photos/590392961 Photo: (c) Frank Hassler, some rights reserved (CC BY-NC) | CC-BY-NC | iNaturalist

Region facts

At a glance

AliasesSoutheastern Plains
Geographic Range
The Southeastern Plains is an interior coastal plain that stretches from Maryland in the north to Mississippi and Louisiana in the south.
Climate SnapshotThe Southeastern Plains has a mild, mid-latitude, humid subtropical climate with hot, humid summers, mild winters, mean annual temperatures ranging from 13°C to 19°C, and a mean annual precipitation of 1,358 mm that is fairly evenly distributed.
Terrain ProfileThe predominant landform consists of dissected, rolling to smooth plains derived from Cretaceous or Tertiary sands, silts, and clays, with greater elevations and relief than the Southern Coastal Plain and Mississippi Alluvial Plain.
Vegetation CoverThe natural vegetation of the Southeastern Plains was predominantly longleaf pine, with smaller areas of oak-hickory-pine forest stands, and in the south, southern mixed forest including beech, sweetgum, and various oaks and pines.
Wildlife HabitatThe Southeastern Plains is home to diverse wildlife, including mammals like white-tailed deer and black bear, birds such as the eastern wild turkey and northern cardinal, and herpetofauna including the American alligator and eastern diamondback rattlesnake.

Eco snapshot

What shapes this region

Climate pattern

  • Often a long warm season that can support extended flowering
  • Periods of heavy rain and dry spells can both happen, depending on the year
  • Microclimates (small local weather differences) show up around shade, pavement, slopes, and water

Vegetation profile

The natural vegetation of the Southeastern Plains was predominantly longleaf pine, with smaller areas of oak-hickory-pine forest stands, and in the south, southern mixed forest including beech, sweetgum, and various oaks and pines.

Wildlife profile

The Southeastern Plains is home to diverse wildlife, including mammals like white-tailed deer and black bear, birds such as the eastern wild turkey and northern cardinal, and herpetofauna including the American alligator and eastern diamondback rattlesnake.

Why pollinators matter here

  • Long seasons can support multiple generations of pollinators when flowers are available
  • Native plants help provide the right nectar, pollen, and host resources
  • Wet-to-dry gradients create many niches—if we plant to match the site
  • Small habitat patches can act like “stepping stones” across developed areas

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, start cool-season bloom options where appropriate
  • Spring: main planting window for many natives (especially transplants)
  • Summer: focus on watering-in new plants and adding heat-tough bloomers
  • Late summer/fall: often a strong time to plant perennials and sow some native seeds (site-dependent)

Quick seasonal checklist

  • Choose 3–5 native species that cover early, mid, and late bloom
  • Plant in clumps (easier for pollinators to find)
  • Add a shallow water source (like a dish with stones)
  • Leave a small “no-mulch, no-dig” corner for ground nesters
  • Keep a simple note of what blooms when, then fill gaps next season

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 swingAdd early-blooming natives; avoid spring “clean-up” that removes shelter; keep leaf litter in a corner
SpringSteady bloom; nesting sites; pesticide-free foragingPlant a mix of spring flowers; leave some bare soil; provide stems/brush for cavity nesters
SummerReliable nectar during heat; water; shade pocketsPlant heat-tolerant bloomers; water new plants; add a shallow water dish with landing stones
Late summer/fallLate-season nectar/pollen to fuel migration and overwintering prepPrioritize fall bloomers; let some plants go to seed; delay heavy cutting-back
Winter or Dry SeasonShelter; undisturbed nesting; protection from repeated disturbanceLeave stems standing; keep leaves/brush in place; avoid pesticide use and unnecessary soil disturbance

Keystone plants

Keystone plants by season

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

Early Bloom

  • Golden alexanders
  • Eastern redbud
  • Wild columbine
  • Lanceleaf coreopsis

Mid-Season Bloom

  • Purple coneflower
  • Butterfly milkweed
  • Swamp milkweed (moist sites)
  • Blazing star (often mid–late)
  • Black-eyed Susan

Late-Season Bloom

  • Aromatic aster
  • New England aster
  • Goldenrod (Canada goldenrod)
  • Joe-Pye weed
  • Blue mistflower

Seed mix concept

A Billion Small Steps Seed mix

A simple way to plan a seed mix (or plant set) is to build it like a relay race:

Spring starter

Spring starter: early bloomers that “wake up” the season

Summer bridge

Summer bridge: heat-tough flowers that keep nectar/pollen available when it’s hot

Fall finisher

Fall finisher: strong late bloomers (often asters/goldenrods) that carry pollinators into the end of the season

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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