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Region profile

Southern Coastal Plain

Southern Coastal Plain is an ecoregion extending from South Carolina and Georgia through central Florida and along the Gulf coast lowlands to eastern Louisiana, characterized by a mild, humid subtropical climate, flat plains, longleaf pine flatwoods, numerous wetlands, and major land uses including forestry, agriculture, and tourism.

Zone

Prairie

Common Name

Southern Coastal Plain

CEC Level III Code

8.5.3

CEC Level II Code

8.5 Mississippi Alluvial and Southeast USA Coastal Plains

Overview

About This Region

The Southern Coastal Plain is a mild, mid-latitude humid subtropical region covering flat plains, barrier islands, and coastal lowlands across the Gulf and Atlantic coasts, from Louisiana to Florida and up to South Carolina. Characterized by hot, humid summers and warm to mild winters, the region is situated at the limits for both tropical and temperate forage species. Pollinators face significant threats here, primarily from habitat loss due to agricultural conversion, heavy grazing, and development. Pesticides also pose a grave threat, reducing survival rates and harming immune systems. Conservation efforts focus on protecting diverse grassland habitats.

Region facts

At a glance

AliasesSouthern Coastal Plain, CEC 8.5.3
Geographic Range
The Southern Coastal Plain ecoregion extends from South Carolina and Georgia through central Florida, and along the Gulf coast lowlands of the Florida Panhandle, Alabama, Mississippi, and eastern Louisiana.
Climate SnapshotThe Southern Coastal Plain has a mild, mid-latitude, humid subtropical climate with hot, humid summers and warm to mild winters, characterized by a mean annual temperature of 19° to 22°C and a mean annual precipitation of 1,338 mm.
Terrain ProfileThe Southern Coastal Plain mostly consists of flat plains, including barrier islands, coastal lagoons, marshes, and swampy lowlands along the Gulf and Atlantic coasts, and is lower in elevation and relief than the ecoregion to the north.
Vegetation CoverThis region was historically characterized by longleaf pine flatwoods and savannas, alongside other forests featuring slash pine, pond pine, pond cypress, beech, sweetgum, southern magnolia, oaks, and southern floodplain forests with bald cypress and water tupelo.
Wildlife HabitatThe Southern Coastal Plain is home to diverse wildlife including black bear, white-tailed deer, manatee, blue heron, and the Florida scrub jay, alongside reptiles like the gopher tortoise and alligator.

Eco snapshot

What shapes this region

Climate pattern

  • Many areas have a long warm season, but timing varies by microclimate (small local weather differences) like shade, wind, and nearby water
  • Coastal sites can be windier and saltier; inland sites may be more sheltered
  • Wet and dry spells can alternate; drainage and soil type strongly shape what thrives

Vegetation profile

This region was historically characterized by longleaf pine flatwoods and savannas, alongside other forests featuring slash pine, pond pine, pond cypress, beech, sweetgum, southern magnolia, oaks, and southern floodplain forests with bald cypress and water tupelo.

Wildlife profile

The Southern Coastal Plain is home to diverse wildlife including black bear, white-tailed deer, manatee, blue heron, and the Florida scrub jay, alongside reptiles like the gopher tortoise and alligator.

Why pollinators matter here

  • Long warm seasons can support multiple waves of flowering—if plants are available
  • Wetlands and river corridors can provide critical water and shelter during hot periods
  • Native flowering plants help sustain native bees and butterflies that also support food webs
  • Pesticide use and “too-tidy” landscaping can remove both flowers and nesting sites
  • Habitat patches (even small ones) can help connect larger natural areas

Seasonal timing

Planting seasons

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

Seasonal timing

  • Late winter/early spring: Plan your plant list; prep beds; start with early bloomers where practical
  • Spring: Main planting season for many gardens; aim for a mix of early and mid-season bloom
  • Summer: Focus on watering new plants, adding heat-tough “bridge” bloomers, and avoiding disturbance to nesting areas
  • Late summer/fall: Add late bloomers; consider fall planting for perennials where conditions allow
  • Winter: Leave stems/leaf litter for shelter; plan next year’s bloom sequence

Quick seasonal checklist

  • Choose at least 3 bloom windows (early, mid, late)
  • Plant in clumps (easier for pollinators to find)
  • Keep some bare soil and some stems for nesting
  • Add a shallow water option (like a dish with stones) in hot periods
  • Skip pesticides—especially “preventative” treatments

Yearly needs

Pollinator calendar

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

Late winter/early springEarly nectar/pollen; safe places to warm up and nestPlant/maintain early-blooming natives; leave some leaf litter and stems; avoid spring “cleanup” that removes shelter
SpringSteady bloom; nesting materials and undisturbed soilAdd a variety of native flowers; keep a small patch of bare ground; plant in sunny clumps
SummerHeat/drought resilience; continuous bloom; water accessAdd summer “bridge” flowers; water new plants; provide a shallow water dish with stones; keep pesticide-free
Late summer/fallHigh-energy nectar; late-season pollen; overwintering prepPlant late bloomers; let some plants go to seed; reduce mowing; leave stems standing
Winter or Dry SeasonShelter from cold/wet or dry stress; undisturbed habitatLeave stems, seedheads, and some leaf litter; avoid heavy mulching everywhere; 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 bloom “jobs,” so something is always flowering.

Spring starter

Spring starter: early bloomers that help pollinators as they become active

Summer bridge

Summer bridge: heat-tough flowers that keep nectar/pollen available through the hottest stretch

Fall finisher

Fall finisher: late-season flowers (often asters/goldenrods) that help pollinators fuel up before winter or seasonal slowdowns

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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