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Arizona/New Mexico Mountains
Region profile

Arizona/New Mexico Mountains

Arizona/New Mexico Mountains is a disjunct region of mountains extending from northwestern Arizona into central and southern New Mexico, with a small section in west Texas, characterized by a variety of climates, chaparral, pinyon-juniper, and ponderosa pine forests, and a diverse geological makeup.

Zone

Interior

Common Name

Arizona/New Mexico Mountains

CEC Level III Code

13.1.1

CEC Level II Code

13.1 Upper Gila Mountains

Overview

About This Region

The Arizona/New Mexico Mountains ecoregion features diverse temperate coniferous forests bordered by arid shrublands and deserts. This region, spanning 109,100 km² across Arizona, New Mexico, and Texas, is a critical habitat for numerous pollinators, including native bees, monarch butterflies, and beetles. Key challenges for these essential species include habitat fragmentation and the impacts of changing climatic conditions, which affect the availability of native host plants like Desert Willow and oaks. Protecting this biodiversity is vital for sustaining the region’s ecosystems.

Region facts

At a glance

AliasesArizona/New Mexico Mountains, Arizona New Mexico Mountains, Arizona–New Mexico Mountains
Geographic Range
This ecoregion is a disjunct mountainous area stretching from northwestern Arizona into central and southern New Mexico, with a small part in west Texas.
Climate SnapshotThe region experiences a variety of climates from alpine to steppe and desert, generally featuring warm to hot summers, mild winters, mean annual temperatures from 3°C to 19°C, and a mean annual precipitation of 477 mm, with over half occurring during July-September thunderstorms.
Terrain ProfileThe terrain includes Colorado Plateau and Basin and Range physiography, featuring steep foothills, mountains, and deeply dissected high plateaus, with elevations ranging from 1,300 to over 3,800 masl.
Vegetation CoverVegetation ranges from chaparral and pinyon-juniper/oak woodlands at lower and middle elevations to ponderosa pine forests, along with Douglas fir, white pine, white fir, and aspen at higher elevations, marking the southernmost extent of spruce-fir forest.
Wildlife HabitatThe Arizona/New Mexico Mountains region is home to mule deer, bighorn sheep, cougar, and Mexican gray wolf, marking the northern extent for some Mexican wildlife species.

Eco snapshot

What shapes this region

Climate pattern

  • Big elevation effects: higher sites are cooler and often have a shorter growing season than foothills.
  • Moisture can arrive in pulses (storms), with dry stretches in between.
  • “Microclimate” (small local weather differences) matters: a sunny south-facing slope can behave very differently than a shaded north-facing one.

Vegetation profile

Vegetation ranges from chaparral and pinyon-juniper/oak woodlands at lower and middle elevations to ponderosa pine forests, along with Douglas fir, white pine, white fir, and aspen at higher elevations, marking the southernmost extent of spruce-fir forest.

Wildlife profile

The Arizona/New Mexico Mountains region is home to mule deer, bighorn sheep, cougar, and Mexican gray wolf, marking the northern extent for some Mexican wildlife species.

Why pollinators matter here

  • Mountain wildflowers and shrubs help sustain native bees and other insects through the season.
  • Pollinators support seed and fruit production that feeds birds and other wildlife.
  • Healthy pollinator communities help native plant communities recover after disturbance (like drought or fire).
  • Gardens and school grounds can reduce “bloom gaps” by adding flowers when wild blooms are sparse.

Seasonal timing

Planting seasons

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

Seasonal timing

  • Late winter/early spring: plan, prep soil, and watch for the first blooms in warm pockets.
  • Spring: a common window for planting many natives (especially when soil moisture is available).
  • Summer: focus on watering-in new plants carefully and adding heat-tough bloomers for continuity.
  • Late summer/fall: often a good time for planting perennials and sowing some native seeds, depending on local conditions.

Quick seasonal checklist

  • Choose 3–5 native plants with staggered bloom times.
  • Add at least one shrub or small tree if you have space.
  • Create a small “no-mulch” or thin-mulch patch for ground-nesting bees.
  • Keep a simple watering plan for the first year (site-dependent).

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 become activeLeave some leaf litter and stems; plant/plan early bloomers; avoid any pesticide use
SpringSteady bloom; nesting sites (soil, stems, cavities)Plant a mix of spring flowers; keep some bare ground; add a small bee house only if you can maintain it
SummerHeat/dry resilience; continuous flowers; water sourcesAdd drought-tolerant mid-summer bloomers; provide a shallow water dish with stones; water new plants deeply but not constantly
Late summer/fall“Last chance” nectar/pollen to build reservesPlant late bloomers; avoid deadheading everything; leave seedheads and stems for habitat
Winter or Dry SeasonShelter from cold/dry conditions; undisturbed nestingDon’t over-tidy; delay heavy cleanup; keep brush/leaf piles in a corner; plan next season’s bloom sequence

Keystone plants

Keystone plants by season

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

Early Bloom

  • Golden currant
  • Serviceberry
  • Oregon grape
  • Rocky Mountain penstemon
  • Blue flax

Mid-Season Bloom

  • Bee balm / wild bergamot
  • Blanketflower
  • Rocky Mountain bee plant
  • Yarrow
  • Purple coneflower

Late-Season Bloom

  • Maximilian sunflower
  • Rubber rabbitbrush
  • New Mexico aster
  • Goldenrod
  • Scarlet gilia

Seed mix concept

A Billion Small Steps Seed mix

A simple way to plan is to think in three layers so something is blooming across the season:

Spring starter

Early bloomers (often shrubs and early perennials) to feed emerging bees.

Summer bridge

Heat- and sun-tolerant flowers that keep nectar/pollen available through the warmest stretch.

Fall finisher

Late-season flowers (often asters/goldenrods-type plants) 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

Agaves (*Agave* (genus))

Agaves

Agaves are bold, sculptural succulents that store water in thick leaves and thrive in bright, dry spots. Their flowers can be a big seasonal draw for pollinators when plants are mature and in bloom.

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Creosote bush (*Larrea* spp.)

Creosote bush

Creosote bush (genus Larrea) is a tough, sun-loving shrub known for its small yellow flowers and resin-scented leaves. It’s best for dry, open spaces where you want a low-water plant that can still offer nectar and pollen when in bloom.

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Desert mallows (*Sphaeralcea* spp.)

Desert mallows

Desert mallows (globe mallows) are tough, sun-loving plants in the genus Sphaeralcea that bring warm-colored blooms and easy pollinator value to dry, low-fuss gardens and containers.

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Marigolds (desert types) (Baileya spp.)

Marigolds

Desert marigolds are sunny, daisy-like wildflowers in the genus Baileya that bring bright color and steady nectar to warm, open garden spots.

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Mesquites

Mesquites are tough, drought-adapted trees in the genus Prosopis that can add shade and seasonal flowers to dry landscapes while offering nectar and pollen for a range of pollinators.

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Ocotillo (*Fouquieria* spp.)

Ocotillo

Ocotillo is a dramatic desert shrub in the genus Fouquieria, known for tall, wand-like stems and bright flower clusters that can be a valuable nectar stop when in bloom.

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Organ pipe & relatives (*Stenocereus* (genus))

Organ pipe & relatives

Organ pipe & relatives are columnar cacti in the genus Stenocereus, grown for their bold, upright stems and showy blooms that can offer nectar and pollen when flowers are open.

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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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Prickly pears (*Opuntia* spp.)

Prickly pears

Prickly pears are tough, sun-loving cacti (genus Opuntia) with bright blooms that can offer nectar and pollen when in flower. They’re best for warm, bright spots and gardeners who want a low-water plant with big character.

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Prickly poppies (*Argemone* spp.)

Prickly poppies

Prickly poppies (genus Argemone) are bold, spiny wildflowers with papery blooms that can add bright color and nectar to sunny, low-fuss garden spots.

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Saguaros (*Carnegiea gigantea*)

Saguaros

Saguaros are iconic desert cacti that grow slowly, live a long time, and offer seasonal flowers that can support pollinators when grown in the right conditions.

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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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Yucca (*Yucca* (genus))

Yucca

Yucca is a group of bold, architectural plants with spiky leaves and tall flower stalks that can add structure to sunny gardens and containers. Many yuccas are tough once established and can be a low-fuss way to offer nectar to visiting pollinators when in bloom.

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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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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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Clearwing moths (Family Sesiidae)

Clearwing moths

Adults can move pollen between blooms, and their presence can signal how healthy local plant communities are.

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Digger bees (Tribe Anthophorini (e.g., Anthophora))

Digger bees

They move pollen between flowers while feeding, helping wild plants and many garden plants set seed and fruit.

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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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Hummingbirds (Family Trochilidae)

Hummingbirds

They move pollen between flowers while feeding, helping many plants reproduce.

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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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Long-horned bees (Tribe Eucerini)

Long-horned bees

They move pollen between flowers as they feed, supporting seed and fruit set in many wild plants and some crops.

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Long-nosed bats (Genus Leptonycteris)

Long-nosed bats

They move pollen between flowers over long distances, helping some plants set fruit and seed.

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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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Nectar-feeding bats (Subfamily Glossophaginae)

Nectar-feeding bats

They move pollen between flowers over long distances and help many plants set fruit and seed.

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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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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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Soldier flies (Family Stratiomyidae)

Soldier flies

Many adults visit flowers for nectar and can move pollen between blooms while feeding.

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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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