Native Plants

Broadtooth Monkeyflower

Mimulus latidens

USDA symbol: MILA4

annual forb

Lower 48 states: native

If you’re looking to add some native charm to your wet garden spots, meet the broadtooth monkeyflower (Mimulus latidens) – a delightful little annual that’s perfectly at home where other plants fear to tread. This charming member of the monkeyflower family brings both ecological value and understated beauty to consistently ...

Broadtooth Monkeyflower: A Delightful Native Wetland Annual

If you’re looking to add some native charm to your wet garden spots, meet the broadtooth monkeyflower (Mimulus latidens) – a delightful little annual that’s perfectly at home where other plants fear to tread. This charming member of the monkeyflower family brings both ecological value and understated beauty to consistently moist garden areas.

What Makes Broadtooth Monkeyflower Special

The broadtooth monkeyflower is a native annual forb that belongs to the beloved Mimulus genus. As its name suggests, this species is distinguished by its notably broad-toothed leaves, setting it apart from its monkeyflower cousins. Like other forbs, it’s an herbaceous plant that completes its entire life cycle in a single growing season, making it a fascinating addition for gardeners who enjoy watching the complete story unfold each year.

Where It Calls Home

This native beauty has quite specific geographic preferences, naturally occurring in California and Oregon along the Pacific Coast. As a true native of the lower 48 states, it has evolved specifically to thrive in the unique conditions of these western regions.

  • Species observed
  • No observations

A Plant That Loves Its Water

Here’s where things get really interesting – the broadtooth monkeyflower is what botanists classify as an obligate wetland plant. This fancy term simply means it almost always needs wet conditions to survive and thrive. In both the Arid West and Western Mountains, Valleys, and Coast regions, you’ll find this plant flourishing in consistently moist to wet soils.

Why Consider Growing Broadtooth Monkeyflower

There are several compelling reasons to welcome this native annual into your garden:

  • Native authenticity: It’s a true regional native, supporting local ecosystem health
  • Wetland specialist: Perfect for those challenging wet spots where other plants struggle
  • Annual interest: Provides seasonal variety and the excitement of watching it complete its life cycle
  • Low maintenance: Once established in suitable conditions, it largely takes care of itself
  • Pollinator support: Like other monkeyflowers, it likely provides nectar and pollen for native pollinators

Growing Conditions and Care

Success with broadtooth monkeyflower is all about understanding its moisture needs:

  • Moisture: Requires consistently moist to wet soil – think bog garden or stream edge conditions
  • Hardiness: Best suited for USDA zones 8-10, matching its native Pacific Coast range
  • Soil: Thrives in wetland soils that would be too soggy for most garden plants
  • Light: Adaptable to various light conditions, from partial shade to full sun

Perfect Garden Settings

This specialized native is ideal for:

  • Native plant gardens focused on regional flora
  • Rain gardens and bioswales
  • Pond or stream margins
  • Wetland restoration projects
  • Bog gardens or consistently moist naturalized areas

Planting and Maintenance Tips

Growing broadtooth monkeyflower successfully requires respecting its wetland nature:

  • Plant in areas with reliable moisture – irrigation may be necessary in drier locations
  • Allow space for natural self-seeding to maintain populations
  • Avoid fertilizers, as wetland plants often prefer nutrient-poor conditions
  • Consider companion planting with other native wetland species
  • Be patient – as an annual, it will need to reseed each year

Is This Plant Right for Your Garden?

Broadtooth monkeyflower is perfect for gardeners who have consistently wet areas and want to support native plant communities. It’s particularly valuable for those creating wildlife habitat or working on wetland restoration. However, if you don’t have naturally moist conditions or the ability to maintain consistent irrigation, this might not be the best choice for your garden.

For gardeners in California and Oregon with wet spots to fill, broadtooth monkeyflower offers an authentic native option that celebrates the unique beauty of regional wetland flora. Just remember – this little beauty needs its water to truly shine!

Mimulus latidens is also known as...

Often we refer to plants by their common names. When shopping for plants the scientific name is the best way to positively identify the plant species you desire. But some plants have more than one name! While it doesn't happen often, nurseries might display one name while you're searching for another. Mimulus latidens is also known as:

Mimulus inconspicuus Gray var. latidens | USDA symbol: MIINL

Why do some plants have more than one name? Over time plant species may be renamed for a few reasons:

  1. Botanists in different regions named the same plant without knowing it had already been classified.
  2. A species was reclassified after scientific advances in, for example, DNA analysis.
  3. Slight variations within a species are sometimes mistakenly identified as entirely new species.

Wetland Status

The rule of seasoned gardeners and landscapers is to choose the "right plant for the right place" — matching plants to their ideal growing conditions, so they'll thrive with less care and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection can be if you don't have the right information. While tags on nursery plants list watering requirements, there's more to the story.

Knowing a plant's wetland status can simplify the process by revealing the interaction between plants, water, and soil. You might be surprised to learn that popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. The table below gives insight into the preferred growing conditions of this plant throughout its geographical distribution.

Region
Preferred Habitat

Arid West (AZ, CA, CO, ID, MT, NV, NM, OR, TX, UT, WA, WY)

Obligate Wetland

Western Mountains, Valleys, and Coast (AZ, CA, CO, ID, MT, NV, NM, OR, SD, UT, WA, WY)

Obligate Wetland
Wetland Glossary
Obligate Wetland
Facultative Wetland
Facultative
Facultative Upland
Obligate Upland
Almost always occurs in wetlands
Usually occurs in wetlands but may occur in non-wetlands
Can occur in wetlands and non-wetlands
Usually occurs in non-wetlands but may occur in wetlands
Almost never occurs in wetlands

Classification

Group: Dicot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicotyledons
Subclass: Asteridae
Order: Scrophulariales
Family: Scrophulariaceae Juss. - Figwort family
Genus: Mimulus L. - monkeyflower

Species: Mimulus latidens (A. Gray) Greene - broadtooth monkeyflower

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA