Native Plants

San Benito Monardella

Monardella antonina benitensis

USDA symbol: MOANB

perennial subshrub

Lower 48 states: native

If you’ve stumbled across the name San Benito monardella (Monardella antonina benitensis) in your native plant research, you’ve discovered one of California’s more elusive botanical treasures. This perennial herb represents the fascinating world of rare native plants that call the Golden State home, though growing it in your garden might ...

San Benito Monardella 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.

San Benito Monardella: A Rare California Native Worth Knowing About

If you’ve stumbled across the name San Benito monardella (Monardella antonina benitensis) in your native plant research, you’ve discovered one of California’s more elusive botanical treasures. This perennial herb represents the fascinating world of rare native plants that call the Golden State home, though growing it in your garden might be more challenging than you’d expect.

What Makes San Benito Monardella Special?

San Benito monardella is a native California perennial that belongs to the mint family, sharing relatives with the more commonly known wild mints and bee balms. As a forb herb, it’s a non-woody plant that returns year after year, likely forming small clumps or patches in its natural habitat.

This plant also goes by the scientific synonym Monardella benitensis, which you might encounter in older botanical references or specialized plant databases.

Where Does It Call Home?

True to its common name, this monardella is endemic to California. The San Benito in its name likely refers to San Benito County, suggesting this plant has very specific geographic ties to this region of central California.

  • Species observed
  • No observations

The Rarity Factor: Why You Should Proceed with Caution

Here’s where things get interesting – and a bit concerning. San Benito monardella carries a conservation status that suggests it’s quite rare. With limited information available about this specific plant, it falls into that category of natives that are precious precisely because they’re so uncommon.

If you’re hoping to add this plant to your garden, here’s what you need to know:

  • Source any plants only from reputable native plant nurseries that can verify ethical collection practices
  • Never collect plants or seeds from wild populations
  • Consider that this plant’s specific growing requirements may be difficult to replicate in typical garden settings

What This Means for Your Garden

While the idea of growing a rare California native might sound appealing, the reality is that San Benito monardella might not be the best choice for most home gardens. The lack of readily available information about its care requirements, combined with its rarity, makes it a challenging plant for even experienced native gardeners.

Better Alternatives: Other Monardellas to Consider

If you’re drawn to the Monardella genus (and who wouldn’t be – they’re fantastic native plants!), consider these more readily available and better-documented alternatives:

  • Coyote mint (Monardella villosa) – widely available and pollinator-friendly
  • Mountain monardella (Monardella odoratissima) – aromatic and beautiful in rock gardens
  • Curly-leaf monardella (Monardella undulata) – unique foliage and easier to grow

The Bottom Line

San Benito monardella represents the incredible diversity of California’s native flora, but it’s one of those plants best appreciated from afar – or left to conservation efforts by botanical experts. If you’re passionate about supporting rare natives, consider donating to organizations that work to protect California’s endangered plant habitats rather than trying to grow this elusive beauty in your backyard.

For your garden, stick with the well-documented Monardella species that will thrive in cultivation while still providing all the benefits of native plants – supporting local wildlife, conserving water, and creating beautiful, sustainable landscapes.

Monardella antonina benitensis 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. Monardella antonina benitensis is also known as:

Monardella benitensis | USDA symbol: MOBE4

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: Lamiales
Family: Lamiaceae Martinov - Mint family
Genus: Monardella Benth. - monardella

Species: Monardella antonina Hardham - San Antonio Hills monardella

Subspecies: Monardella antonina Hardham ssp. benitensis (Hardam) Jokerst - San Benito monardella

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