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Region profile

Sinaloa Coastal Plain with Low Thorn Tropical Forest and Wetlands

Sinaloa Coastal Plain with Low Tropical Thorn Forest and Wetlands is a subregion belonging to the Pacific Coastal Plain physiographic region, characterized by landform systems of plains and hills, with climates ranging from semi-dry to warm and dry, and containing important agricultural areas, major rivers, and diverse wildlife including marine species vital for fishing.

Zone

Prairie

Common Name

Sinaloa Coastal Plain with Low Thorn Tropical Forest and Wetlands

CEC Level III Code

14.3.1

CEC Level II Code

14.3 Tropical Dry Forests

Overview

About This Region

The Sinaloa Coastal Plain with Low Thorn Tropical Forest and Wetlands is a vital, yet vulnerable, region for pollinators. This coastal ecosystem, characterized by low thorn forests and wetland areas, supports diverse flora, but is increasingly threatened. Factors affecting pollinators here include habitat loss due to development and agriculture, changes in water availability, and the impacts of climate change, with future vulnerability projected to be high. Conservation efforts are crucial to protect the delicate balance required for these ecosystems and their critical pollinators to thrive.

Region facts

At a glance

AliasesSinaloa Coastal Plain with Low Thorn Tropical Forest and Wetlands, Sinaloa coastal plain, low thorn tropical forest and wetlands
Geographic Range
The Sinaloa Coastal Plain with Low Tropical Thorn Forest and Wetlands is a subregion belonging to the Pacific Coastal Plain physiographic region and a small portion of the Western Sierra Madre, characterized by plains and hills with climates ranging from dry to semi-dry.
Climate SnapshotThe climate in this subregion ranges from semi-dry to warm and dry, with conditions often adverse for seasonal agriculture due to low precipitation, high temperatures, and high evaporation.
Terrain ProfileThis subregion consists mainly of flat land with low elevations, reaching a maximum of 300 meters above sea level in some isolated hills, and is characterized by deep, productive Chromic Vertisols soils.
Vegetation CoverVegetation in this subregion is diverse, ranging from tropical thorn forests at higher elevations to sarcocaul shrubland in the hills and ecologically important mangrove wetlands along the coastline, with distribution directly linked to environmental moisture and soil development.
Wildlife HabitatThe Sinaloa Coastal Plain is home to diverse wildlife, including land mammals like the coyote and gray fox, numerous reptiles and amphibians, 31 types of at-risk birds such as the great blue heron and brown pelican, and important marine species in the Gulf of California like shrimp, various crabs, clams, and fish, along with the gray whale.

Eco snapshot

What shapes this region

Climate pattern

  • Often seasonal: a wetter period and a drier period, with year-to-year variation.
  • Coastal breezes and humidity can moderate conditions near the shore.
  • Microclimates (small local weather differences) show up around wetlands, shaded courtyards, and areas with different soils and drainage.

Vegetation profile

Vegetation in this subregion is diverse, ranging from tropical thorn forests at higher elevations to sarcocaul shrubland in the hills and ecologically important mangrove wetlands along the coastline, with distribution directly linked to environmental moisture and soil development.

Wildlife profile

The Sinaloa Coastal Plain is home to diverse wildlife, including land mammals like the coyote and gray fox, numerous reptiles and amphibians, 31 types of at-risk birds such as the great blue heron and brown pelican, and important marine species in the Gulf of California like shrimp, various crabs, clams, and fish, along with the gray whale.

Why pollinators matter here

  • Many native flowering plants rely on insects for seed and fruit set.
  • Wetland edges and flowering shrubs can provide critical nectar/pollen when other areas are dry.
  • Diverse habitats can support a wider range of pollinators—if pesticide exposure and habitat loss are reduced.
  • Continuous bloom is especially important where the dry season can limit flowers for long stretches.

Seasonal timing

Planting seasons

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

Seasonal timing

  • Late dry season into early rains: good for planning, site prep, and planting tough perennials where watering is possible.
  • Wet season: often the easiest time to establish many plants because soil moisture is higher.
  • Late wet season into dry season: focus on mulching, deep watering (if needed), and keeping some flowers going.

Quick seasonal checklist

  • Choose a sunny spot (most pollinator plants need strong light).
  • Add a few plants that bloom at different times, not all at once.
  • Keep some bare soil and stems for nesting (don’t “clean up” everything).
  • Water new plants until established, then shift toward drought-smart care.

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 shiftPlant or protect early-blooming natives; leave some leaf litter and stems; provide a shallow water dish with stones
SpringSteady bloom; nesting sites for beesAdd a mix of flowering shrubs and perennials; keep a small patch of bare, well-drained soil; avoid all pesticides
SummerHeat- and drought-resilient flowers; water accessPrioritize drought-tough native blooms; water deeply but less often; keep a small muddy spot or damp sand area if feasible
Late summer/fall“Bridge” blooms to prevent food gaps; places to restAdd late-blooming natives; let some plants go to seed; reduce trimming so insects can use stems and seedheads
Winter or Dry SeasonShelter from dry conditions; any available bloomsKeep habitat “messy enough” (logs, stems, leaf litter); protect flowering shrubs; avoid clearing everything at once

Seed mix concept

A Billion Small Steps Seed mix

A simple way to plan is to think in three layers so something is blooming through changing wet/dry conditions:

Spring starter

Spring starter: early bloomers that provide the first strong nectar/pollen.

Summer bridge

Summer bridge: heat- and rain-tolerant flowers that keep food available through the toughest stretch.

Fall finisher

Fall finisher: late bloomers that help pollinators build reserves and complete life cycles before the dry season or cooler periods.

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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Erythrinas

Erythrinas (coral trees) are showy flowering trees in the genus Erythrina, known for bold, nectar-rich blooms that can be a seasonal food stop for pollinators in warm gardens.

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Inga (*Inga* (genus))

Inga

Inga is a group of tropical trees (genus Inga) known for fluffy, brush-like flowers and long pods. In warm climates, it can be a shade tree that also offers nectar and pollen for a variety of insects.

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Milkweeds (*Asclepias* spp.)

Milkweeds

Milkweeds from tropical Mexico (genus Asclepias) are nectar-rich wildflowers that can add bright blooms and pollinator activity to sunny gardens and containers.

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Passionflowers (*Passiflora* spp.)

Passionflowers

Passionflowers (genus Passiflora) are climbing vines known for their intricate, otherworldly blooms and their ability to add vertical color to fences, trellises, and sunny walls.

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Salvias (Mexico diversity) (Salvia spp.)

Salvias

Salvias are a big, colorful group of flowering plants in the genus Salvia, with especially rich diversity in Mexico. Many are easy, pollinator-friendly garden plants that bloom over a long season when given sun and well-drained soil.

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Wild lilacs (*Calliandra* spp.)

Wild lilacs

Wild lilacs (genus Calliandra) are warm-climate shrubs known for fluffy “powderpuff” blooms that can add color and pollinator activity to sunny gardens and patios.

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Pollinators

Pollinators active in this region

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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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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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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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Stingless bees (Mexico / tropics) (Tribe Meliponini)

Stingless bees (Mexico / tropics)

They help pollinate many wild and cultivated plants in tropical and subtropical regions, supporting food webs and biodiversity.

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