North America Native Plant

Mt. Lassen Clarkia

Botanical name: Clarkia lassenensis

USDA symbol: CLLA

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Godetia lassenensis Eastw. (GOLA3)   

Mt. Lassen Clarkia: A Charming Native Wildflower for Western Gardens If you’re looking to add a touch of delicate beauty to your native plant garden, Mt. Lassen clarkia (Clarkia lassenensis) might just be the perfect addition. This lovely annual wildflower brings soft pink to purple blooms to the landscape while ...

Mt. Lassen Clarkia: A Charming Native Wildflower for Western Gardens

If you’re looking to add a touch of delicate beauty to your native plant garden, Mt. Lassen clarkia (Clarkia lassenensis) might just be the perfect addition. This lovely annual wildflower brings soft pink to purple blooms to the landscape while supporting local wildlife and requiring minimal fuss once established.

Meet the Mt. Lassen Clarkia

Mt. Lassen clarkia is a native annual forb that belongs to the evening primrose family. You might occasionally see it listed under its former botanical name, Godetia lassenensis, but don’t let that confuse you – it’s the same charming plant. As an annual, this wildflower completes its entire life cycle in one growing season, making it a delightfully low-maintenance addition to your garden.

Being a forb means it’s a herbaceous flowering plant without woody stems – think of it as the garden equivalent of a graceful dancer, all movement and no bulk. The plant grows as a slender, upright stem adorned with narrow leaves and topped with clusters of delicate four-petaled flowers.

Where Does It Call Home?

This native beauty has quite specific tastes when it comes to location. Mt. Lassen clarkia is naturally found in California, Nevada, and Oregon, particularly thriving in the volcanic soils of the Sierra Nevada and southern Cascade Range. It’s endemic to these regions, meaning you won’t find it growing wild anywhere else in the world – making it a true treasure for western native plant enthusiasts.

Why Gardeners Love Mt. Lassen Clarkia

There are several compelling reasons to consider adding this native wildflower to your landscape:

  • Native wildlife support: The flowers attract native bees, butterflies, and other beneficial pollinators, providing essential nectar and pollen resources
  • Low maintenance: Once established, this drought-tolerant annual requires minimal care
  • Seasonal beauty: Delicate pink to purple blooms appear in late spring to early summer, adding soft color to the garden
  • Naturalistic appeal: Perfect for creating authentic wildflower meadows and naturalized landscapes
  • Self-seeding habit: Will often reseed itself, creating lovely drifts of color year after year

Perfect Garden Settings

Mt. Lassen clarkia shines brightest in certain garden styles and situations. Consider it for:

  • Native plant gardens seeking authentic regional flora
  • Wildflower meadows and naturalized areas
  • Xeriscapes and drought-tolerant landscapes
  • Pollinator gardens focused on supporting native species
  • Areas where you want seasonal color without ongoing maintenance

Growing Mt. Lassen Clarkia Successfully

The good news is that this native wildflower isn’t particularly fussy about its growing conditions, especially if you can mimic its natural habitat.

Preferred Growing Conditions

  • Sunlight: Full sun to partial shade
  • Soil: Well-draining soils; volcanic or sandy soils preferred
  • Water: Moderate water during growing season, drought-tolerant once established
  • Climate zones: USDA hardiness zones 7-10

Planting and Care Tips

Getting started with Mt. Lassen clarkia is refreshingly straightforward:

  • Timing: Direct sow seeds in fall or early spring for best results
  • Seeding: Scatter seeds on prepared soil surface and lightly rake in
  • Watering: Keep soil consistently moist during germination, then reduce watering as plants establish
  • Maintenance: Minimal care required once established – this plant thrives on benign neglect
  • Propagation: Allow plants to go to seed for natural reseeding, or collect seeds for controlled sowing

A Few Things to Keep in Mind

While Mt. Lassen clarkia is generally problem-free, there are a few considerations for potential growers:

As an annual, don’t expect the same individual plants to return next year – but with proper conditions, you’ll likely see new seedlings emerging from self-sown seeds. The plant’s specific native range means it may not thrive in climates significantly different from its natural habitat, so gardeners outside the western United States might find it challenging to grow successfully.

The Bottom Line

Mt. Lassen clarkia offers western gardeners an opportunity to grow a truly special native wildflower that supports local ecosystems while adding delicate beauty to the landscape. Its low-maintenance nature and ability to self-seed make it an excellent choice for naturalistic gardens and anyone looking to create habitat for native pollinators. If you’re gardening within its native range and appreciate subtle, natural beauty over flashy garden showstoppers, this charming annual deserves a spot in your native plant collection.

Mt. Lassen 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 lassenensis (Eastw.) F.H. Lewis & M.E. Lewis - Mt. Lassen clarkia

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