Native Plants

Rattan’s Monkeyflower

Mimulus rattanii var. decurtatus

USDA symbol: MIRAD2

annual forb

Lower 48 states: native

Meet Rattan’s monkeyflower (Mimulus rattanii var. decurtatus), a charming little annual that’s as unique as its name suggests. This California native might not be the flashiest flower in the garden, but it holds a special place in the Golden State’s botanical heritage – and perhaps should earn a spot in ...

Rattan’s Monkeyflower may be listed as rare in your area.
Global Conservation Status

Status: S4T3 | Apparently Secure: Uncommon but not rare, and usually widespread. Possible cause for longterm concern. Typically more than 100 occurrences in the state or more than 10,000 individuals.

Rattan’s Monkeyflower: A Rare California Native Worth Growing

Meet Rattan’s monkeyflower (Mimulus rattanii var. decurtatus), a charming little annual that’s as unique as its name suggests. This California native might not be the flashiest flower in the garden, but it holds a special place in the Golden State’s botanical heritage – and perhaps should earn a spot in your native plant garden too.

What Makes Rattan’s Monkeyflower Special?

This delightful annual forb belongs to the beloved monkeyflower family, known for their cheerful, snapdragon-like blooms. As a true California native, Rattan’s monkeyflower has been quietly beautifying the state’s landscapes long before any of us started thinking about native plant gardening. Unlike perennial plants that stick around year after year, this annual completes its entire life cycle in a single growing season, making it a perfect candidate for gardeners who like a bit of change in their landscape.

Where Does It Call Home?

Rattan’s monkeyflower is exclusively Californian – you won’t find this particular variety growing wild anywhere else in the world. This makes it a true treasure for Golden State gardeners looking to create authentic native plant communities in their yards.

  • Species observed
  • No observations

A Word About Rarity

Here’s something important to keep in mind: Rattan’s monkeyflower has a Global Conservation Status of S4T3, which indicates it’s not exactly common in the wild. This doesn’t mean you shouldn’t grow it – quite the opposite! Growing rare native plants in our gardens can actually help support their conservation. However, it does mean you should be thoughtful about sourcing your seeds or plants.

Always purchase from reputable native plant nurseries that practice responsible propagation methods. Never collect seeds or plants from wild populations, as this can harm already vulnerable native communities.

Why Grow Rattan’s Monkeyflower?

If you’re wondering whether this little annual deserves space in your garden, here are some compelling reasons to give it a try:

  • It’s a true California native, supporting local ecosystems
  • Annual flowers provide seasonal interest and change
  • Monkeyflowers typically attract native pollinators
  • Perfect for native plant gardens and naturalistic landscapes
  • Growing it helps support conservation of a less common native species

Growing Rattan’s Monkeyflower Successfully

While specific growing information for this particular variety is limited, we can draw on what we know about monkeyflowers in general and California native annuals to give you the best shot at success.

Garden Design Ideas

Rattan’s monkeyflower works beautifully in:

  • Native California plant gardens
  • Wildflower meadows and naturalistic plantings
  • Rock gardens with good drainage
  • Mixed annual borders featuring California natives
  • Pollinator gardens designed for local species

The Bottom Line

Rattan’s monkeyflower might not be the easiest native plant to grow or the most widely available, but that’s exactly what makes it special. For dedicated native plant gardeners in California, this rare annual offers a chance to grow something truly unique while supporting the conservation of California’s botanical heritage.

Remember, the key to success with any rare native plant is starting with responsibly sourced material and being patient as you learn its preferences. Your efforts will be rewarded with the satisfaction of growing a piece of California’s natural history right in your own backyard.

Mimulus rattanii var. decurtatus is also known as...

Often we refer to plants by their common names. When shopping for plants the scientific name is the best way to positively identify the plant species you desire. But some plants have more than one name! While it doesn't happen often, nurseries might display one name while you're searching for another. Mimulus rattanii var. decurtatus is also known as:

Mimulus decurtatus | USDA symbol: MIDE12
Mimulus rattanii Gray ssp. decurtatus | USDA symbol: MIRAD

Why do some plants have more than one name? Over time plant species may be renamed for a few reasons:

  1. Botanists in different regions named the same plant without knowing it had already been classified.
  2. A species was reclassified after scientific advances in, for example, DNA analysis.
  3. Slight variations within a species are sometimes mistakenly identified as entirely new species.

Classification

Group: Dicot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicotyledons
Subclass: Asteridae
Order: Scrophulariales
Family: Scrophulariaceae Juss. - Figwort family
Genus: Mimulus L. - monkeyflower

Species: Mimulus rattanii A. Gray - Rattan's monkeyflower

Variety: Mimulus rattanii A. Gray var. decurtatus (A.L. Grant) Pennell - Rattan's monkeyflower

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