North America Native Plant

Michigan Monkeyflower

Botanical name: Mimulus glabratus var. michiganensis

USDA symbol: MIGLM

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Mimulus glabratus Kunth ssp. michiganensis Pennell (MIGLM2)  âš˜  Mimulus michiganensis (Pennell) Posto & Prather (MIMI24)   

Michigan Monkeyflower: A Rare Wetland Gem Worth Protecting Meet the Michigan monkeyflower (Mimulus glabratus var. michiganensis), a tiny botanical treasure that’s as rare as it is charming. This delicate perennial forb might not be the flashiest plant in the garden, but it holds a special place in Michigan’s natural heritage—and ...

Rare plant alert!

Region: Michigan

Status: S5T1: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘ Endangered: In danger of extinction throughout all or a significant portion of its range. ⚘

Region: Michigan

Michigan Monkeyflower: A Rare Wetland Gem Worth Protecting

Meet the Michigan monkeyflower (Mimulus glabratus var. michiganensis), a tiny botanical treasure that’s as rare as it is charming. This delicate perennial forb might not be the flashiest plant in the garden, but it holds a special place in Michigan’s natural heritage—and unfortunately, it’s in serious trouble.

A Plant on the Brink

Before we dive into growing tips, here’s something every gardener needs to know: the Michigan monkeyflower is listed as Endangered in Michigan. This means it’s at serious risk of disappearing from the wild entirely. If you’re considering adding this plant to your garden, please ensure you’re using responsibly sourced material from reputable native plant nurseries or conservation programs—never collect from wild populations.

What Makes It Special

The Michigan monkeyflower is a true Michigan native, found nowhere else but in select wetland areas within the state. This perennial herb produces small, cheerful yellow tubular flowers during the summer months that are perfectly sized for small native pollinators like bees and flies. As an obligate wetland plant, it almost always occurs in consistently wet conditions, making it a specialized species with very particular needs.

Where It Calls Home

This rare beauty is endemic to Michigan, meaning it’s found naturally nowhere else on Earth. Its extremely limited geographic distribution is part of what makes it so vulnerable to extinction. The plant thrives in Michigan’s unique wetland ecosystems, where it has adapted to very specific environmental conditions over thousands of years.

Growing Michigan Monkeyflower: A Conservation Challenge

Let’s be honest—growing Michigan monkeyflower isn’t for the casual gardener. This plant has evolved in very specific wetland conditions and can be quite finicky outside its natural habitat. However, for conservation-minded gardeners with the right setup, it can be a rewarding way to help preserve a piece of Michigan’s natural heritage.

Ideal Growing Conditions

If you’re up for the challenge, here’s what Michigan monkeyflower needs to thrive:

  • Moisture: Consistently wet to saturated soil—this is non-negotiable
  • Light: Full sun to partial shade
  • Soil: Wetland soils, often with organic content
  • Climate: Hardy in USDA zones 3-6, matching Michigan’s climate
  • Habitat: Bog gardens, rain gardens, or constructed wetlands

Best Garden Applications

Michigan monkeyflower isn’t suited for traditional flower beds or typical landscaping. Instead, consider it for:

  • Specialized wetland or bog gardens
  • Conservation or restoration projects
  • Rain gardens with permanent water features
  • Educational or demonstration gardens focused on rare plants

Supporting Pollinators and Wildlife

Despite its small size, Michigan monkeyflower plays an important role in supporting local ecosystems. Its tubular flowers attract small native bees and flies, providing nectar sources in wetland environments where such resources may be limited.

The Bottom Line

Michigan monkeyflower represents both an opportunity and a responsibility for gardeners. While it’s not an easy plant to grow and requires very specific conditions, it offers a chance to participate in conservation efforts for one of Michigan’s rarest plants. If you have the right wetland garden setup and can source plants responsibly, growing Michigan monkeyflower is a meaningful way to help preserve this endangered species for future generations.

Just remember: this isn’t a plant to grow on a whim. It requires dedication, the right conditions, and most importantly, a commitment to conservation. But for those willing to take on the challenge, you’ll be nurturing a true piece of Michigan’s irreplaceable natural heritage.

Michigan 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 glabratus Kunth - roundleaf monkeyflower

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