North America Non-native Plant

Mimulus ×bartonianus

Botanical name: Mimulus ×bartonianus

USDA symbol: MIBA7

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

Mimulus ×bartonianus: The Mystery Hybrid That Has Botanists Scratching Their Heads If you’ve stumbled across the name Mimulus ×bartonianus in your plant research, you’re not alone in feeling puzzled. This particular plant is something of an enigma in the botanical world – a hybrid that exists more as a whisper ...

Mimulus ×bartonianus: The Mystery Hybrid That Has Botanists Scratching Their Heads

If you’ve stumbled across the name Mimulus ×bartonianus in your plant research, you’re not alone in feeling puzzled. This particular plant is something of an enigma in the botanical world – a hybrid that exists more as a whisper in scientific literature than a well-documented garden specimen.

What We Know (And Don’t Know) About This Mysterious Plant

The × symbol in the name tells us this is a hybrid, meaning it’s the offspring of two different Mimulus species. But here’s where things get tricky – finding reliable information about Mimulus ×bartonianus is like searching for a needle in a haystack. This hybrid appears to be extremely rare or poorly documented, leaving us with more questions than answers.

Without clear information about its parent species, native range, or basic growing requirements, recommending this plant for home gardens becomes quite challenging. The lack of available data suggests this may be either a very localized natural hybrid or perhaps a plant that exists primarily in botanical collections rather than general cultivation.

The Mimulus Family Connection

While we can’t say much about this specific hybrid, we do know it belongs to the Mimulus genus, commonly known as monkeyflowers. This family includes many delightful native plants that are excellent choices for gardeners interested in supporting local ecosystems and attracting pollinators.

Should You Try to Grow It?

Given the lack of available information about Mimulus ×bartonianus, including its:

  • Native status and geographic distribution
  • Growing requirements and hardiness zones
  • Invasive potential or conservation status
  • Availability through nurseries or seed sources
  • Basic care and maintenance needs

We’d recommend focusing your gardening efforts on well-documented native Mimulus species instead. These alternatives will give you the satisfaction of growing beautiful, ecologically beneficial plants without the guesswork.

Better Alternatives: Proven Native Mimulus Species

If you’re drawn to the Mimulus genus, consider these well-documented native options that offer known benefits to both gardeners and local ecosystems:

  • Look for native monkeyflowers suited to your specific region
  • Research locally appropriate Mimulus species through your state’s native plant society
  • Consult with local native plant nurseries for regionally appropriate recommendations

The Bottom Line

While Mimulus ×bartonianus might sound intriguing, the lack of available growing information makes it impractical for most gardeners. Your time and garden space are precious resources – investing them in well-documented native plants will give you better results and greater confidence in your gardening success.

Sometimes the most responsible thing we can do as gardeners is acknowledge when a plant remains too much of a mystery to recommend. In this case, celebrating the many other wonderful native Mimulus species available might be the wiser path forward.

Mimulus ×bartonianus

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 ×bartonianus Rivoire [excluded]

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