North America Native Plant

Roundleaf Monkeyflower

Botanical name: Mimulus glabratus

USDA symbol: MIGL

Life cycle: perennial

Habit: forb

Native status: Native to Canada âš˜ Native to the lower 48 states  

Roundleaf Monkeyflower: A Cheerful Native for Your Wetland Garden If you’re looking to add some sunny charm to the soggy spots in your yard, meet the roundleaf monkeyflower (Mimulus glabratus)! This delightful native perennial might just become your new best friend for those tricky wet areas where other plants fear ...

Roundleaf Monkeyflower: A Cheerful Native for Your Wetland Garden

If you’re looking to add some sunny charm to the soggy spots in your yard, meet the roundleaf monkeyflower (Mimulus glabratus)! This delightful native perennial might just become your new best friend for those tricky wet areas where other plants fear to tread.

What Makes Roundleaf Monkeyflower Special?

Don’t let the quirky name fool you – this little charmer doesn’t actually look like a monkey (though some say the flowers resemble tiny faces). The roundleaf monkeyflower is a herbaceous perennial forb that brings bright yellow, snapdragon-like blooms to wet areas from spring through fall. As a true water lover, this plant has earned Obligate Wetland status across every region of North America, meaning it almost always calls wetlands home.

Where Does It Call Home?

This native superstar has quite the impressive range! You’ll find roundleaf monkeyflower naturally occurring across a vast territory spanning from Canada down through the lower 48 states. It thrives in an amazing variety of locations including Alberta, Manitoba, Ontario, Quebec, Saskatchewan, and numerous U.S. states from Arizona and California in the west to Illinois and Wisconsin in the midwest, and from Montana down to Texas.

Why Your Garden Will Love It

Here’s why roundleaf monkeyflower deserves a spot in your landscape:

  • Pollinator magnet: Those cheerful yellow flowers are like tiny beacons for bees, butterflies, and other beneficial insects
  • Problem solver: Perfect for those perpetually soggy areas where other plants struggle
  • Long blooming: Provides color from spring through fall when growing conditions are right
  • Native credentials: Supports local ecosystems while requiring minimal fuss
  • Versatile zones: Hardy in USDA zones 3-9, making it suitable for most North American gardens

Perfect Garden Partnerships

Roundleaf monkeyflower shines brightest in:

  • Rain gardens and bioswales
  • Pond and stream edges
  • Bog gardens and wetland restorations
  • Native plant gardens with consistent moisture
  • Naturalistic landscapes near water features

Growing Your Roundleaf Monkeyflower

The secret to success with this native beauty is simple: keep it wet! Here’s how to give your roundleaf monkeyflower the royal treatment:

Light Requirements: This flexible native adapts to full sun or partial shade, though it tends to bloom more prolifically with adequate sunlight.

Soil and Water: Think consistently moist to wet – this isn’t the plant for your drought-tolerant garden. It thrives in soggy soils that would make other plants throw in the towel.

Planting Tips: Spring is ideal for getting your monkeyflower established. Choose the wettest spot in your yard – that area where water pools after rain or near downspouts and water features.

Care and Maintenance: Once established in the right conditions, roundleaf monkeyflower is remarkably low-maintenance. The biggest challenge is usually ensuring it has enough water rather than too much!

A Few Things to Consider

While roundleaf monkeyflower is generally well-behaved, remember that it’s truly a water baby. Don’t expect it to adapt to typical garden conditions – it needs that consistent moisture to thrive. If you don’t have naturally wet areas, you’ll need to commit to regular irrigation or consider it for container water gardens.

The Bottom Line

For gardeners blessed (or cursed!) with wet, boggy areas, roundleaf monkeyflower offers a perfect native solution. It transforms problem spots into pollinator havens while adding cheerful color throughout much of the growing season. Plus, you’ll have the satisfaction of supporting local ecosystems with a plant that truly belongs in your regional landscape.

Ready to give those soggy spots some love? Roundleaf monkeyflower might just be the native hero your wetland garden has been waiting for!

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

Atlantic and Gulf Coastal Plain

OBL

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

Eastern Mountains and Piedmont

OBL

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

Great Plains

OBL

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

Midwest

OBL

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

Northcentral & Northeast

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

Roundleaf 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