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Cross Timbers
Region profile

Cross Timbers

Cross Timbers is a transitional area in north-central Texas, central Oklahoma, and southeastern Kansas, characterized by little bluestem grassland with scattered blackjack oak and post oak trees, a mild humid subtropical climate, and rolling plains topography.

Zone

Interior

Common Name

Cross Timbers

CEC Level III Code

9.4.5

CEC Level II Code

9.4 South-Central Semi-Arid Prairies

Overview

About This Region

The Cross Timbers region is a mosaic of prairie and forest, making it vital for diverse pollinators. This area faces threats from habitat fragmentation due to development and agricultural practices, which reduce essential foraging and nesting sites. Pesticide use and invasive species also pose risks. Conservation efforts focus on restoring native plant communities, protecting remnant prairies, and encouraging sustainable land management to support bees, butterflies, and other key pollinators.

Region facts

At a glance

AliasesCross Timbers, CEC 9.4.5
Geographic Range
The Cross Timbers region is a transitional area in north-central Texas, central Oklahoma, and southeastern Kansas, situated between the former prairie regions to the west and the forested low mountains to the east.
Climate SnapshotThe Cross Timbers ecoregion has a mild, mid-latitude, humid subtropical climate with hot summers, mild winters, a mean annual temperature ranging from 13°C to 19°C, and a mean annual precipitation of 856 mm.
Terrain ProfileThe Cross Timbers region features rolling plains, with some rounded hills, ridges, and cuesta topography, composed of Pennsylvanian sandstone, mudstone, and claystone, and Cretaceous limestone and claystone.
Vegetation CoverThe Cross Timbers vegetation is characterized by little bluestem grassland and scattered blackjack oak and post oak trees, with a dense woody understory developing when fire is absent.
Wildlife HabitatThe Cross Timbers region is home to a diverse array of species including white-tailed deer, bobcat, various birds like the wild turkey and mourning dove, and reptiles such as the box turtle and rattlesnake.

Eco snapshot

What shapes this region

Climate pattern

  • Often has strong seasonal swings, with periods that can be hot and dry.
  • Microclimates (small local weather differences) show up between sunny openings, shaded woods, and sheltered edges.
  • Drought tolerance is a practical advantage for many garden plant choices.

Vegetation profile

The Cross Timbers vegetation is characterized by little bluestem grassland and scattered blackjack oak and post oak trees, with a dense woody understory developing when fire is absent.

Wildlife profile

The Cross Timbers region is home to a diverse array of species including white-tailed deer, bobcat, various birds like the wild turkey and mourning dove, and reptiles such as the box turtle and rattlesnake.

Why pollinators matter here

  • Pollinators help native wildflowers and many shrubs/trees reproduce, supporting food webs.
  • A mix of open sun and partial shade can support a wider range of pollinator species and life stages.
  • Drought and heat can create “nectar gaps,” so gardens that bridge those gaps can make a real difference.
  • Nesting habitat (bare ground, stems, and leaf litter) is often as important as flowers.

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 a small area; start with tough early bloomers if available.
  • Spring: Main planting window for many natives; aim to establish roots before hotter weather.
  • Summer: Focus on watering new plants wisely and adding heat-tolerant “bridge” bloomers.
  • Late summer/fall: Another good window for planting perennials; set up next year’s early blooms.
  • Winter: Leave stems/leaf litter; plan expansions and seed sourcing.

Quick seasonal checklist

  • Add at least 3 bloom periods (early/mid/late).
  • Plant in clumps (easier for pollinators to find).
  • Keep one small patch a bit “messy” for nesting and shelter.
  • Choose native plants matched to your sun 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 swingLeave last year’s stems and leaf litter in place; add a few early-blooming natives; avoid spring pesticide “cleanup” sprays
SpringSteady bloom; nesting sites (especially bare ground and cavities)Plant a mix of spring bloomers; keep some open soil; add a small brush/leaf pile in a quiet corner
SummerReliable nectar during heat; shallow water; shade/windbreaksPrioritize drought-tolerant natives; water new plants deeply but less often; add a shallow water dish with stones
Late summer / fall“Finishing” blooms to fuel late-season adults; seed/cover for overwinteringPlant late bloomers; stop deadheading some plants so seeds/structure remain; keep habitat intact
Winter (or dormant season)Undisturbed shelter in stems, soil, and leaf litterDon’t cut everything down; delay heavy cleanup; plan next year’s bloom sequence

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:

Spring starter

Spring starter: early bloomers that kick off the season when pollinators first need food.

Summer bridge

Summer bridge: heat-tolerant flowers that keep nectar going through dry spells.

Fall finisher

Fall finisher: late bloomers (like asters/goldenrods) that help pollinators fuel up before dormancy.

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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Blanketflowers (*Gaillardia* spp.)

Blanketflowers

Blanketflowers (Gaillardia) are bright, long-blooming wildflowers that can bring steady color and pollinator visits to sunny gardens, schoolyards, and even containers.

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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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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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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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Coreopsis (*Coreopsis* spp.)

Coreopsis

Coreopsis (often called tickseed) is a cheerful, long-blooming group of wildflowers that can brighten gardens and containers while offering easy-to-find nectar and pollen for many 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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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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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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Prairie clovers (*Dalea* spp.)

Prairie clovers

Prairie clovers (genus Dalea) are prairie wildflowers with tidy, clover-like leaves and bottlebrush-style blooms that are popular with many pollinators. They’re a great choice for sunny, well-drained spots where you want long-lasting summer color without fussy care.

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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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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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Wild indigos (*Baptisia* (genus))

Wild indigos

Wild indigos (genus Baptisia) are long-lived native wildflowers known for upright flower spikes, clover-like leaves, and a tough, low-fuss nature once established. They’re a strong choice for pollinator-friendly gardens where you want reliable blooms and a plant that can hold its own without constant care.

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Wild sunflowers’ relatives (*Silphium*)

Wild sunflowers’ relatives

Silphium (often called rosinweed) is a group of tall, tough native wildflowers known for sunflower-like blooms and long-lasting nectar and pollen. They’re a strong choice for pollinator gardens, schoolyards, and naturalized edges where you want big plants that can handle summer heat once established.

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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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