North America Non-native Plant

Mimulus Cupreus

Botanical name: Mimulus cupreus

USDA symbol: MICU9

Native status: Not native but doesn't reproduce and persist in the wild

Synonyms: Mimulus luteus L. var. cupreus (hort. ex Dombrain) Hook. (MILUC)   

Mimulus cupreus: The Copper Monkey Flower That’s Not Monkeying Around If you’ve ever wondered what happens when a flower decides to dress up in shades of burnished copper and orange-red, meet Mimulus cupreus. This charming little bloomer might not have a catchy common name that rolls off the tongue, but ...

Mimulus cupreus: The Copper Monkey Flower That’s Not Monkeying Around

If you’ve ever wondered what happens when a flower decides to dress up in shades of burnished copper and orange-red, meet Mimulus cupreus. This charming little bloomer might not have a catchy common name that rolls off the tongue, but don’t let that fool you – it’s got personality in spades and colors that’ll make your garden pop like a sunset.

What Exactly Is Mimulus cupreus?

Mimulus cupreus belongs to the monkey flower family, and while it may sound like it should be swinging from garden trellises, it’s actually a well-behaved ground-hugger. You might also see it listed under its synonym, Mimulus luteus var. cupreus, but whatever name it goes by, this little charmer is all about bringing warm, metallic hues to your garden palette.

Where Does It Call Home?

This copper-colored beauty hails from the cool mountain regions of Chile and parts of western South America. It’s adapted to those crisp, high-altitude conditions where the air is thin and the growing seasons are short but sweet.

Why You Might Want to Give It a Spot in Your Garden

Here’s the thing about Mimulus cupreus – it’s like that friend who shows up to the party in a stunning outfit that nobody else thought to wear. The copper and orange-red tubular flowers are absolutely eye-catching, especially when planted in groups. Plus, it’s compact enough to tuck into rock gardens, borders, or containers without taking over your entire landscape.

The Pollinator Perspective

Your local bees will thank you for planting this nectar-rich beauty, and if you’re lucky enough to have hummingbirds in your area, they’ll likely become regular visitors too. Those tubular flowers are like little fuel stations perfectly designed for their feeding preferences.

Growing Conditions That Make It Happy

Mimulus cupreus is somewhat particular about its living conditions, but once you get the hang of it, it’s quite manageable:

  • Soil should be moist but well-draining – think of a wrung-out sponge
  • Partial shade to full sun works best, though it appreciates some afternoon shade in hot climates
  • Cool temperatures are preferred; it’s not a fan of scorching summer heat
  • USDA hardiness zones 7-9 are its sweet spot

Planting and Care Tips for Success

Getting the most out of your copper monkey flower isn’t rocket science, but these tips will help ensure it thrives:

  • Keep the soil consistently moist – drought stress will make it sulk
  • Deadhead spent flowers to encourage more blooms throughout the season
  • In hot summer areas, provide some afternoon shade or extra water
  • Mulch around the base to help retain moisture and keep roots cool
  • In colder zones, consider growing it as an annual or bringing containers indoors

Garden Design Ideas

This compact beauty works wonderfully in several garden settings:

  • Rock gardens where its copper tones complement stone textures
  • Alpine or mountain-themed gardens
  • Mixed containers for patio color
  • Border edges where its unique color can create focal points
  • Cottage gardens for that discovered treasure feel

A Word About Native Alternatives

While Mimulus cupreus isn’t invasive and can be a lovely garden addition, consider exploring native monkey flowers in your region first. North American gardeners might look into species like Mimulus guttatus (yellow monkey flower) or Mimulus cardinalis (scarlet monkey flower), which offer similar charm while supporting local ecosystems.

The Bottom Line

Mimulus cupreus is like that interesting friend from another country – fascinating, beautiful, and definitely worth getting to know, even if they need a bit of extra attention to feel at home. If you can provide the cool, moist conditions it craves and you’re drawn to its unique copper-colored blooms, this little monkey flower could be a delightful addition to your garden palette. Just remember to keep those native alternatives in mind too – your local wildlife will appreciate the hometown hospitality.

Mimulus Cupreus

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 cupreus hort. ex Dombrain

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