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Southwestern Tablelands
Region profile

Southwestern Tablelands

Southwestern Tablelands is a region lying mostly between the High Plains and the Southern Rockies, covering parts of southeastern Colorado, eastern New Mexico, the panhandles of Texas and Oklahoma, and southwest Kansas, characterized by elevated tablelands, rolling plains, and semiarid rangeland.

Zone

Interior

Common Name

Southwestern Tablelands

CEC Level III Code

9.4.3

CEC Level II Code

9.4 South-Central Semi-Arid Prairies

Overview

About This Region

The Southwestern Tablelands, while ecologically varied, relies heavily on pollinators like native bees, diverse butterflies, and hummingbirds for reproduction of native flora. Bees are vital for numerous crops, and hummingbirds, attracted to bright, tubular flowers, are key avian pollinators. Factors like intense heat and drought common to the region, combined with the need for specific host plants for butterflies, significantly impact pollinator populations and require conservation efforts focused on water-wise, diverse plantings.
Southwestern Tablelands
https://www.inaturalist.org/photos/344539716 Photo: (c) Scott Ranger, some rights reserved (CC BY-NC) | CC-BY-NC | iNaturalist

Region facts

At a glance

AliasesSouthwestern Tablelands, CEC 9.4.3
Geographic Range
The Southwestern Tablelands, mostly lying between the High Plains and the Southern Rockies, covers parts of southeastern Colorado, eastern New Mexico, the panhandles of Texas and Oklahoma, and a small area in southwest Kansas.
Climate SnapshotThe Southwestern Tablelands ecoregion has a dry mid-latitude steppe climate with hot summers and cool winters, a mean annual temperature of 9°C to 15°C, and a mean annual precipitation of 448 mm.
Terrain ProfileThe Southwestern Tablelands region is characterized by elevated tablelands, red-hued canyons, mesas, badlands, gorges, and dissected river breaks, with a topography of mostly broad, rolling plains, piedmonts, and flat plains, where elevations range from 350 to 2,650 m.
Vegetation CoverThe vegetation is primarily shortgrass and midgrass prairie featuring species like blue grama and buffalograss, interspersed with areas of sand sagebrush, yucca, cholla, pinyon pine, and various junipers, while riparian areas include cottonwood, willow, elm, and hackberry.
Wildlife HabitatThe current wildlife includes mule deer, pronghorn, coyote, ringtail, black-tailed prairie dog, desert cottontail, kangaroo rat, various birds like scaled quail and hawks, and reptiles such as rattlesnakes and prairie skinks.

Eco snapshot

What shapes this region

Climate pattern

  • Semi-arid tendencies mean plants often need to be drought-tough once established.
  • Microclimates (small local weather differences) can form in sheltered draws, north-facing slopes, and near water.
  • Sun, wind, and soil texture can matter as much as rainfall for what thrives.

Vegetation profile

The vegetation is primarily shortgrass and midgrass prairie featuring species like blue grama and buffalograss, interspersed with areas of sand sagebrush, yucca, cholla, pinyon pine, and various junipers, while riparian areas include cottonwood, willow, elm, and hackberry.

Wildlife profile

The current wildlife includes mule deer, pronghorn, coyote, ringtail, black-tailed prairie dog, desert cottontail, kangaroo rat, various birds like scaled quail and hawks, and reptiles such as rattlesnakes and prairie skinks.

Why pollinators matter here

  • Pollinators help native plants set seed, supporting resilient plant communities.
  • In dry regions, flowering can be “boom-and-bust,” so steady garden blooms can fill gaps.
  • Diverse pollinators support food webs (birds and other wildlife depend on seeds and insects).
  • Habitat fragments benefit from connected “stepping stones” of flowers and nesting sites.

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; choose drought-tolerant natives.
  • Spring: Plant cool-season natives and start watering to help roots establish (then taper as plants settle).
  • Summer: Focus on deep, infrequent watering for new plantings; add mulch carefully (leave some bare soil for ground nesters).
  • Late summer/fall: Often a good time to plant perennials where fall moisture helps establishment; leave stems and seedheads.
  • Winter: Observe sun/wind patterns and decide where next year’s blooms can fill gaps.

Quick seasonal checklist

  • Aim for 3-season bloom (spring + summer + late season).
  • Add at least one native bunchgrass or low groundcover for structure and shelter.
  • Keep a small area mulch-free for ground-nesting bees.
  • Water new plants to establish; prioritize drought-smart choices.

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 insects emergePlant/plan for early bloomers; leave last year’s stems and leaf litter until warmer weather settles in
SpringSteady bloom; nesting sites (soil, stems, cavities)Plant a mix of spring-flowering natives; keep some bare, well-drained soil; avoid pesticides
SummerReliable water/nectar during heat; shade/shelterAdd heat-tolerant summer bloomers; provide a shallow water dish with stones; water new plants deeply but not daily
Late summer/fall“Finish-line” nectar/pollen to build reservesPlant late bloomers; avoid deadheading everything; leave seedheads and stems for habitat
Winter or Dry SeasonProtection from cold/dry exposure; undisturbed nestingDon’t over-tidy; leave stems standing; keep brush/leaf piles in a corner; plan next season’s bloom sequence

Seed mix concept

A Billion Small Steps Seed mix

A simple way to plan is to think in three layers:

Spring starter

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

Summer bridge

Summer bridge: heat-tolerant flowers that keep nectar/pollen available through dry spells.

Fall finisher

Fall finisher: late-season asters/goldenrods (or similar natives) that help pollinators stock up before winter.

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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