North America Native Plant

Broadtooth Monkeyflower

Botanical name: Mimulus latidens

USDA symbol: MILA4

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Mimulus inconspicuus A. Gray var. latidens (MIINL)   

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 ...

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.

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!

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 work and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection is. While tags 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. Surprisingly, many popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. Also, it helps you make smarter gardening choices and grow healthy plants with less care and feeding, saving you time, frustration, and money while producing an attractive garden with greater ecological benefits.

Regions
Status
Moisture Conditions

Arid West

OBL

Obligate Wetland - Plants with this status almost always occurs in wetlands

Western Mountains, Valleys, and Coast

OBL

Obligate Wetland - Plants with this status almost always occurs in wetlands

Broadtooth Monkeyflower

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
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