North America Native Plant

Rock Monardella

Botanical name: Monardella viridis saxicola

USDA symbol: MOVIS4

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Synonyms: Monardella saxicola I.M. Johnst. (MOSA4)   

Rock Monardella: A Fragrant Native Gem for California Gardens If you’re looking to add a delightfully aromatic and pollinator-friendly native plant to your California garden, meet rock monardella (Monardella viridis saxicola). This charming little perennial herb might not be the showiest plant in your landscape, but what it lacks in ...

Rare plant alert!

Region: Conservation status by state

Status: S3T3: Status is uncertain but is somewhere between the following rankings: Vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals ⚘ Subspecies or variety is vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals. ⚘

Rock Monardella: A Fragrant Native Gem for California Gardens

If you’re looking to add a delightfully aromatic and pollinator-friendly native plant to your California garden, meet rock monardella (Monardella viridis saxicola). This charming little perennial herb might not be the showiest plant in your landscape, but what it lacks in size, it more than makes up for in fragrance, ecological value, and pure California authenticity.

What Is Rock Monardella?

Rock monardella is a low-growing perennial herb that’s as tough as the rocky terrain it calls home. Also known by its scientific synonym Monardella saxicola, this native California plant belongs to the mint family, which explains its wonderfully aromatic leaves. True to its name, this little plant has a particular fondness for rocky, well-draining sites where many other plants would struggle to survive.

Where Does Rock Monardella Come From?

This plant is a true California native, found naturally throughout the Golden State’s diverse landscapes. Rock monardella has evolved specifically for California’s unique climate and soil conditions, making it perfectly adapted to thrive in local gardens without the fuss and resources that non-native plants often demand.

Why You Should (Carefully) Consider Rock Monardella

Important Conservation Note: Rock monardella has a Global Conservation Status of S3T3, which indicates some concern about its population stability. If you choose to grow this special plant, please source it only from reputable native plant nurseries that propagate their stock responsibly rather than collecting from wild populations.

Here’s why this little gem deserves a spot in your native garden:

  • Pollinator magnet: The small white to pale pink flower clusters are beloved by native bees, butterflies, and other beneficial insects
  • Drought tolerant: Once established, rock monardella thrives with minimal water
  • Aromatic delight: The mint-family fragrance adds a sensory dimension to your garden
  • Low maintenance: This tough little plant practically takes care of itself
  • Authentic California character: Support local ecosystems with truly native plants

Perfect Garden Roles for Rock Monardella

Rock monardella shines in several garden situations:

  • Rock gardens: Obviously! It’s literally designed for rocky conditions
  • Xeriscape landscapes: Excellent for water-wise gardening
  • Native plant gardens: A must-have for authentic California plantings
  • Ground cover: Provides aromatic, low-growing coverage
  • Pollinator gardens: Essential for supporting native beneficial insects

Growing Rock Monardella Successfully

The good news is that rock monardella wants to succeed in your garden – you just need to give it conditions similar to its natural habitat.

Climate and Hardiness

Rock monardella thrives in USDA hardiness zones 7-10, making it suitable for most of California’s diverse climate zones. It’s adapted to the state’s Mediterranean climate with wet winters and dry summers.

Growing Conditions

  • Light: Full sun to partial shade (morning sun with afternoon shade works well)
  • Soil: Well-draining rocky or sandy soil is essential – this plant despises wet feet
  • Water: Drought tolerant once established; water sparingly and deeply
  • Drainage: Excellent drainage is non-negotiable

Planting and Care Tips

  • Plant in fall or early spring when temperatures are mild
  • Amend heavy clay soils with gravel or coarse sand for better drainage
  • Water regularly the first year to establish roots, then reduce watering
  • Prune lightly after flowering to maintain shape
  • Avoid fertilizing – this plant prefers lean soils
  • Mulch lightly with gravel rather than organic mulch

The Bottom Line

Rock monardella is a wonderful choice for California gardeners who want to create authentic, sustainable landscapes that support local wildlife. While its conservation status means you should source it responsibly, this aromatic native brings both beauty and ecological value to the right garden setting. If you have a sunny spot with excellent drainage and want to support California’s native pollinators, rock monardella might just be the perfect addition to your plant palette.

Remember: the key to success with this plant is thinking like a rock – provide excellent drainage, don’t overwater, and let this tough little native show you what California resilience looks like.

Rock Monardella

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

Lamiales

Family

Lamiaceae Martinov - Mint family

Genus

Monardella Benth. - monardella

Species

Monardella viridis Jeps. - green monardella

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