North America Native Plant

Kelso Creek Monkeyflower

Botanical name: Mimulus shevockii

USDA symbol: MISH

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Kelso Creek Monkeyflower: A Rare California Gem Worth Protecting Meet the Kelso Creek monkeyflower (Mimulus shevockii), one of California’s most elusive native wildflowers. This tiny annual forb might not be destined for your garden beds, but its story is absolutely worth knowing – especially if you’re passionate about native plant ...

Rare plant alert!

Region: Conservation status by state

Status: S2: Status is uncertain but is somewhere between the following rankings: Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘

Kelso Creek Monkeyflower: A Rare California Gem Worth Protecting

Meet the Kelso Creek monkeyflower (Mimulus shevockii), one of California’s most elusive native wildflowers. This tiny annual forb might not be destined for your garden beds, but its story is absolutely worth knowing – especially if you’re passionate about native plant conservation.

What Makes This Monkeyflower Special?

The Kelso Creek monkeyflower belongs to the beloved Mimulus family, known for their charming snapdragon-like flowers that seem to grin back at you from the landscape. As an annual forb, this little plant completes its entire life cycle in just one growing season, making every appearance all the more precious.

What sets this species apart isn’t just its beauty – it’s its incredible rarity. With a Global Conservation Status of S2, the Kelso Creek monkeyflower is classified as Imperiled, with only 6 to 20 known occurrences and fewer than 3,000 individual plants believed to exist in the wild.

Where Does It Call Home?

This exclusive California native has chosen some pretty specific real estate in the Golden State. The Kelso Creek monkeyflower is endemic to California, meaning you won’t find it growing naturally anywhere else on Earth. Its limited range makes it a true California treasure that exists nowhere else in the world.

Should You Plant Kelso Creek Monkeyflower?

Here’s where we need to have a serious conversation. While the idea of growing this rare beauty might be tempting, the Kelso Creek monkeyflower’s imperiled status means it requires our protection, not our cultivation attempts.

Important Conservation Note: Due to its extreme rarity and vulnerable status, we strongly recommend against attempting to grow this species unless you have access to responsibly sourced seeds or plants from authorized conservation programs. Collecting from wild populations could further threaten this already imperiled species.

Better Alternatives for Your Garden

If you’re drawn to the charm of monkeyflowers, consider these more common California native Mimulus species instead:

  • Sticky monkeyflower (Diplacus aurantiacus)
  • Seep monkeyflower (Mimulus guttatus)
  • Cardinal monkeyflower (Mimulus cardinalis)

These alternatives will give you that classic monkeyflower appeal while supporting local ecosystems without putting rare species at risk.

Supporting Conservation Efforts

The best way to help the Kelso Creek monkeyflower is to support native plant conservation organizations and habitat protection efforts in California. Consider volunteering with local native plant societies, participating in citizen science projects, or donating to organizations working to protect rare plant habitats.

Why Rarity Matters

Plants like the Kelso Creek monkeyflower remind us that biodiversity includes not just the showy, well-known species, but also the quiet, rare ones that play unique roles in their ecosystems. Each imperiled plant represents thousands of years of evolutionary adaptation to very specific conditions.

While we can’t invite this particular monkeyflower into our gardens, we can appreciate its existence and work to ensure future generations will have the chance to discover it in its natural habitat. Sometimes the most meaningful way to garden with native plants is to protect the wild spaces where the rarest ones still flourish.

Remember: the best gardens are those that complement and support the broader landscape, creating corridors and connections that help all native species – common and rare alike – continue to thrive.

Kelso Creek 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 shevockii Heckard & Bacig. - Kelso Creek monkeyflower

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