North America Native Plant

Mountain Clarkia

Botanical name: Clarkia heterandra

USDA symbol: CLHE4

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Gaura heterandra Torr. (GAHE7)  âš˜  Heterogaura heterandra (Torr.) Coville (HEHE6)   

Mountain Clarkia: A Delicate Native Annual Worth Discovering If you’re looking to add a touch of understated elegance to your native garden, meet mountain clarkia (Clarkia heterandra). This charming little annual might not be the showiest flower on the block, but it brings a special kind of quiet beauty that’s ...

Mountain Clarkia: A Delicate Native Annual Worth Discovering

If you’re looking to add a touch of understated elegance to your native garden, meet mountain clarkia (Clarkia heterandra). This charming little annual might not be the showiest flower on the block, but it brings a special kind of quiet beauty that’s perfect for gardeners who appreciate nature’s more subtle moments.

What is Mountain Clarkia?

Mountain clarkia is a native annual forb that belongs to the evening primrose family. As an herbaceous plant without woody stems, it completes its entire life cycle in one growing season, making it a delightful surprise that returns each year through self-seeding. You might also see it listed under its former scientific names, Gaura heterandra or Heterogaura heterandra, but don’t let the botanical shuffling confuse you – it’s the same lovely plant.

Where Does Mountain Clarkia Call Home?

This native beauty is naturally found in California and Oregon, where it thrives in oak woodlands, chaparral, and foothill environments. Its natural range reflects its preference for the Mediterranean-like climate of the western United States.

Why Choose Mountain Clarkia for Your Garden?

There are several compelling reasons to welcome mountain clarkia into your landscape:

  • Native credentials: As a true native, it supports local ecosystems and requires less water and maintenance than non-native alternatives
  • Pollinator magnet: The delicate flowers attract native bees and other beneficial insects, making it a valuable addition to pollinator gardens
  • Low maintenance: Once established, this annual is quite self-sufficient and drought-tolerant
  • Natural charm: The small, four-petaled white to pale pink flowers create a cottage garden feel without the fuss

Garden Design Ideas

Mountain clarkia shines in several garden settings:

  • Wildflower meadows and naturalized areas
  • Native plant gardens alongside other California and Oregon natives
  • Mediterranean-style landscapes
  • Cottage gardens where you want a more relaxed, informal look
  • Transition zones between cultivated and wild areas

Because of its delicate stature and ephemeral nature, mountain clarkia works best when planted in drifts or allowed to naturalize, rather than as a formal border plant.

Growing Conditions and Care

Mountain clarkia is refreshingly easy to grow when you match its preferences:

  • Climate zones: Best suited for USDA zones 8-10
  • Sunlight: Full sun to partial shade
  • Soil: Well-drained soils; avoid heavy clay or constantly wet conditions
  • Water: Moderate water during the growing season, but drought-tolerant once established
  • Maintenance: Minimal care required – this plant prefers benign neglect

Planting and Propagation Tips

Getting mountain clarkia started in your garden is straightforward:

  • Timing: Direct sow seeds in fall or early spring
  • Method: Scatter seeds directly where you want them to grow – they don’t transplant well
  • Spacing: Don’t worry too much about precise spacing; nature will sort it out
  • Germination: Seeds need a cool, moist period to germinate properly
  • Self-seeding: Allow some plants to go to seed for natural regeneration next year

Is Mountain Clarkia Right for Your Garden?

Mountain clarkia is perfect for gardeners who:

  • Want to support native plant communities
  • Appreciate subtle, naturalistic beauty over flashy displays
  • Prefer low-maintenance plants
  • Are creating habitat for native pollinators
  • Live in suitable climate zones (California, Oregon, or similar Mediterranean climates)

However, it might not be the best choice if you’re looking for long-lasting cut flowers, bold color statements, or plants that perform well in humid, high-rainfall areas outside its native range.

The Bottom Line

Mountain clarkia may be small and unassuming, but it’s exactly the kind of native plant that makes a garden feel connected to its local landscape. Its gentle beauty, minimal care requirements, and ecological benefits make it a worthy addition to any native or naturalistic garden in suitable climates. Plus, there’s something deeply satisfying about watching a plant that truly belongs in your area thrive with minimal intervention from you.

If you’re ready to embrace the quiet charm of native annuals, mountain clarkia is waiting to surprise you with its understated elegance.

Mountain Clarkia

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Myrtales

Family

Onagraceae Juss. - Evening Primrose family

Genus

Clarkia Pursh - clarkia

Species

Clarkia heterandra (Torr.) F.H. Lewis & P.H. Raven - mountain clarkia

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