North America Native Plant

Lavender Woollystar

Botanical name: Eriastrum filifolium

USDA symbol: ERFI

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Gilia filifolia Nutt. (GIFI4)   

Lavender Woollystar: A Charming California Native for Water-Wise Gardens If you’re looking for a delicate, drought-tolerant annual that brings soft color to your California garden, meet the lavender woollystar (Eriastrum filifolium). This charming native wildflower might be small in stature, but it packs a punch when it comes to adding ...

Lavender Woollystar: A Charming California Native for Water-Wise Gardens

If you’re looking for a delicate, drought-tolerant annual that brings soft color to your California garden, meet the lavender woollystar (Eriastrum filifolium). This charming native wildflower might be small in stature, but it packs a punch when it comes to adding natural beauty and supporting local pollinators.

What Makes Lavender Woollystar Special?

Lavender woollystar is a true California native, belonging to the phlox family and thriving in the Golden State’s diverse landscapes. As an annual forb, this herbaceous plant completes its entire life cycle in one growing season, producing clusters of tiny lavender-blue flowers that seem to float above thread-like foliage. You might also see it listed under its botanical synonym, Gilia filifolia.

Where Does It Grow Naturally?

This native beauty calls California home, where it naturally occurs in desert and semi-arid regions. From rocky hillsides to open flats, lavender woollystar has adapted to thrive in the state’s challenging yet beautiful environments.

Why Choose Lavender Woollystar for Your Garden?

There are several compelling reasons to include this native annual in your landscape:

  • Water-wise gardening: Once established, it requires minimal irrigation, making it perfect for drought-tolerant landscapes
  • Pollinator magnet: The small flowers attract native bees, butterflies, and other beneficial insects
  • Natural appearance: Adds authentic California charm to wildflower gardens and naturalistic plantings
  • Low maintenance: As a native plant, it’s naturally adapted to local conditions
  • Seasonal interest: Provides delicate texture and soft color during its blooming period

Perfect Garden Settings

Lavender woollystar shines in several garden styles:

  • Native plant gardens
  • Xeriscapes and drought-tolerant landscapes
  • Wildflower meadows
  • Desert gardens
  • Rock gardens with good drainage
  • Natural areas and habitat restoration projects

Growing Conditions and Care

Success with lavender woollystar comes from mimicking its natural habitat. This plant thrives in USDA hardiness zones 8-10 and prefers:

  • Sunlight: Full sun exposure
  • Soil: Well-draining sandy or rocky soils
  • Water: Low water requirements once established
  • Drainage: Excellent drainage is essential to prevent root rot

Planting and Care Tips

Growing lavender woollystar successfully is relatively straightforward when you follow these guidelines:

  • Timing: Direct seed in fall for spring germination and blooming
  • Seeding: Scatter seeds on prepared soil and lightly rake in
  • Watering: Provide some water during germination, then reduce significantly
  • Maintenance: Minimal care needed; avoid overwatering and over-fertilizing
  • Soil preparation: Ensure excellent drainage by amending heavy soils with sand or gravel

Supporting California’s Ecosystem

By choosing lavender woollystar, you’re not just adding beauty to your garden—you’re supporting California’s native ecosystem. This plant provides nectar for native pollinators and helps maintain the natural plant communities that wildlife depends on. It’s a small but meaningful way to contribute to local biodiversity.

The Bottom Line

Lavender woollystar might be delicate in appearance, but it’s tough where it counts. For California gardeners seeking authentic native plants that require minimal resources while supporting local wildlife, this charming annual deserves serious consideration. Its subtle beauty and ecological benefits make it a win-win choice for water-wise, environmentally conscious gardeners.

Remember, the key to success with any native plant is understanding its natural habitat and providing similar conditions in your garden. With proper drainage, full sun, and restraint with the watering can, lavender woollystar will reward you with its delicate charm season after season.

Lavender Woollystar

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

Solanales

Family

Polemoniaceae Juss. - Phlox family

Genus

Eriastrum Wooton & Standl. - woollystar

Species

Eriastrum filifolium (Nutt.) Wooton & Standl. - lavender woollystar

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