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Arizona/New Mexico Plateau
Region profile

Arizona/New Mexico Plateau

Arizona/New Mexico Plateau is a region of plateaus, mesas, cliffs, and deep canyons covering parts of northern Arizona, northwestern New Mexico, and southern Colorado, characterized by dry, mid-latitude steppe and desert climates and sparse water resources.

Zone

Interior

Common Name

Arizona/New Mexico Plateau

CEC Level III Code

10.1.7

CEC Level II Code

10.1 Cold Deserts

Overview

About This Region

The Arizona/New Mexico Plateau region is known for its dry, sunny climate with elevations ranging from 2,817 to 13,161 ft. Summer thundershowers are vital, especially for herbaceous plants that support diverse pollinators like bees, butterflies, and moths. Land uses such as livestock grazing, logging, and recreation affect the landscape, impacting available forage and habitat. Conserving native plants is key to sustaining the region’s unique pollinator populations. (396 characters)

Region facts

At a glance

AliasesArizona/New Mexico Plateau, Arizona New Mexico Plateau, AZ/NM Plateau
Geographic Range
This region covers a large portion of northern Arizona, northwestern New Mexico, and the San Luis Valley of southern Colorado, bordered by higher, more forest covered, mountainous ecoregions.
Climate SnapshotThe Arizona/New Mexico Plateau ecoregion has dry, mid-latitude steppe and desert climates, characterized by hot summers with low humidity and cool to cold dry winters, with a mean annual temperature mostly around 11°C and mean annual precipitation of 293 mm.
Terrain ProfileThe region is characterized by plateaus, mesas, cliffs, deep canyons, valleys, and some irregular plains, with local relief varying from a few meters to well over 300 meters along tableland side slopes, and some volcanic cones reaching over 3,000 masl.
Vegetation CoverVegetation consists of shadscale, fourwing saltbush, greasewood, and various gramas at lower elevations, transitioning to pinyon-juniper woodlands and big sagebrush at higher elevations.
Wildlife HabitatWildlife in the Arizona/New Mexico Plateau includes mule deer, pronghorn, cougar, bobcat, various small mammals like prairie dogs and jackrabbits, and birds such as the greater roadrunner and Swainson's hawk, along with rattlesnakes and the Rio Grande silvery minnow.

Eco snapshot

What shapes this region

Climate pattern

  • Dry climate with strong seasonal variability; timing of moisture can differ year to year.
  • Microclimates (small local weather differences) are common—shade, elevation, and nearby water can change what grows.
  • Hot sun and wind can stress plants; soil moisture is often the limiting factor.

Vegetation profile

Vegetation consists of shadscale, fourwing saltbush, greasewood, and various gramas at lower elevations, transitioning to pinyon-juniper woodlands and big sagebrush at higher elevations.

Wildlife profile

Wildlife in the Arizona/New Mexico Plateau includes mule deer, pronghorn, cougar, bobcat, various small mammals like prairie dogs and jackrabbits, and birds such as the greater roadrunner and Swainson’s hawk, along with rattlesnakes and the Rio Grande silvery minnow.

Why pollinators matter here

  • Pollinators help native wildflowers and shrubs set seed, supporting food webs.
  • In dry regions, flowering windows can be short—so a few key plants can make a big difference.
  • Healthy pollinator communities support resilient landscapes after drought and disturbance.
  • Water-wise gardens can provide reliable nectar and pollen when surrounding areas are between blooms.

Seasonal timing

Planting seasons

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

Seasonal timing

  • Late winter/early spring: plan, prep soil lightly, and start early bloomers where conditions allow.
  • Spring: a common planting window for many natives (especially transplants) if you can water to establish.
  • Summer: focus on heat-tough plants and careful watering; avoid stressing new seedlings in extreme heat.
  • Late summer/fall: often a good time for planting perennials and sowing some native seeds, depending on local moisture patterns.

Quick seasonal checklist

  • Choose drought-adapted native plants and group them by water needs.
  • Add mulch or gravel mulch thoughtfully (leave some bare soil for ground-nesting bees).
  • Plan for “bloom overlap” (at least 2–3 plants flowering in each main season).
  • Set up a simple establishment-watering plan for the first season.

Yearly needs

Pollinator calendar

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

Late winter/early springEarly nectar/pollen; safe nesting sitesPlant or protect early-blooming natives; leave some bare ground and last year’s stems
SpringSteady bloom; nesting materials and undisturbed soilAdd a cluster of spring bloomers; avoid tilling; provide a shallow water source with stones
SummerHeat-resilient flowers; shade and water nearbyPlant drought-tough summer bloomers; water deeply but less often; keep blooms going through hot spells
Late summer/fall“Last chance” nectar/pollen to fuel overwinteringAdd late-season bloomers; avoid deadheading everything; leave seedheads and stems
Winter or Dry SeasonShelter; intact habitatDon’t over-tidy; keep leaf litter in corners; protect shrubs and perennial bases

Keystone plants

Keystone plants by season

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

Early Bloom

  • Desert marigold
  • Globemallow
  • Penstemon (various local species)
  • Golden currant

Mid-Season Bloom

  • Bee balm / wild bergamot
  • Rocky Mountain bee plant
  • Blanketflower
  • Purple prairie clover
  • Fourwing saltbush

Late-Season Bloom

  • Rabbitbrush
  • Goldenrod
  • Asters
  • Maximilian sunflower

Seed mix concept

A Billion Small Steps Seed mix

A simple way to plan a seed mix here is to build it like a relay race—so something is flowering through the main growing season.

Spring starter

Spring starter: early bloomers that wake up pollinators and start the season strong.

Summer bridge

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

Fall finisher

Fall finisher: late bloomers (often shrubs and asters/goldenrods) that provide crucial end-of-season fuel.

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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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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Gilias

Gilias (genus Gilia) are airy, nectar-rich wildflowers that can add quick color to sunny spots and help support a variety of 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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Penstemons (*Penstemon* (genus))

Penstemons

Penstemons (beardtongues) are hardy, flower-filled wildflowers that bring bright color and steady nectar to gardens and containers, especially in sunny spots with well-drained soil.

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Phacelias (*Phacelia* spp.)

Phacelias

Phacelias are easygoing wildflowers in the genus Phacelia, known for their nectar-rich blooms that can bring lots of pollinator activity to gardens, schoolyards, and even containers.

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Rabbitbrush (*Ericameria* spp. / *Chrysothamnus* spp.)

Rabbitbrush

Rabbitbrush is a tough, sun-loving shrub known for its bright yellow late-season blooms that can help keep pollinators fed when many other flowers are fading.

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Sagebrushes (*Artemisia* spp.)

Sagebrushes

Sagebrushes are tough, aromatic shrubs in the genus Artemisia that can anchor a dry, sunny habitat and offer shelter and seasonal nectar for a range of insects.

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Wild buckwheats (*Eriogonum* (genus))

Wild buckwheats

Wild buckwheats (genus Eriogonum) are tough, long-blooming western native wildflowers that can turn dry, sunny spots into reliable pollinator stops.

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Yarrow (*Achillea millefolium*)

Yarrow

Yarrow is a tough, easygoing wildflower that brings long-lasting blooms and steady pollinator visits to gardens, schoolyards, and even containers.

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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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