North America Native Plant

Leiberg’s Fleabane

Botanical name: Erigeron leibergii

USDA symbol: ERLE5

Life cycle: perennial

Habit: forb

Native status: Native to Canada âš˜ Native to the lower 48 states  

Leiberg’s Fleabane: A Pacific Northwest Native Worth Protecting If you’re looking to add a charming native wildflower to your Pacific Northwest garden, Leiberg’s fleabane (Erigeron leibergii) might just be the delightful little daisy you didn’t know you needed. This perennial wildflower brings authentic regional character to gardens while supporting local ...

Rare plant alert!

Region: Conservation status by state

Status: S3?: Status is uncertain but is somewhere between the following rankings: Inexact rank: ⚘ 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 ⚘

Leiberg’s Fleabane: A Pacific Northwest Native Worth Protecting

If you’re looking to add a charming native wildflower to your Pacific Northwest garden, Leiberg’s fleabane (Erigeron leibergii) might just be the delightful little daisy you didn’t know you needed. This perennial wildflower brings authentic regional character to gardens while supporting local ecosystems – though its somewhat uncertain conservation status means we need to be thoughtful about how we grow it.

What Makes Leiberg’s Fleabane Special

Don’t let the name fleabane put you off – despite its rather unglamorous moniker, this native beauty produces cheerful white daisy-like flowers with sunny yellow centers that bloom throughout the summer months. As a perennial forb (that’s garden-speak for a non-woody flowering plant), it comes back year after year, slowly spreading to create natural drifts of blooms.

What really sets Leiberg’s fleabane apart is its authenticity as a true regional native. This isn’t a plant that’s been shipped in from across the continent – it belongs here in the Pacific Northwest, having evolved alongside our local wildlife and weather patterns.

Where Does It Come From?

Leiberg’s fleabane calls the Pacific Northwest home, naturally occurring in British Columbia and Washington state. It’s perfectly adapted to our regional growing conditions, making it an excellent choice for gardeners wanting to create landscapes that reflect the natural beauty of our area.

A Note About Rarity

Here’s something important to know: Leiberg’s fleabane has a Global Conservation Status of S3?, which indicates some uncertainty about its population status. While this doesn’t mean it’s critically endangered, it does mean we should be responsible gardeners. If you choose to grow this lovely native, make sure you source your plants or seeds from reputable native plant nurseries that practice ethical collection methods – never collect from wild populations.

Why Grow Leiberg’s Fleabane?

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

  • Pollinator magnet: The small daisy flowers attract native bees, butterflies, and other beneficial insects
  • Low maintenance: Once established, it’s quite drought tolerant and requires minimal care
  • Authentic regional character: Creates a genuine Pacific Northwest feel in your landscape
  • Naturalistic appeal: Perfect for wildflower meadows, rock gardens, and informal plantings
  • Perennial reliability: Comes back year after year, often self-seeding in favorable conditions

Where to Use It in Your Garden

Leiberg’s fleabane shines in several garden situations:

  • Rock gardens: Its compact size and drought tolerance make it ideal for rocky, well-drained spots
  • Native plant gardens: A natural choice for authentic Pacific Northwest plantings
  • Wildflower meadows: Helps create naturalistic prairie-style gardens
  • Alpine gardens: Well-suited to higher elevation growing conditions
  • Ground cover: Can slowly spread to cover areas with poor soil

Growing Conditions and Care

The good news is that Leiberg’s fleabane isn’t particularly fussy about its growing conditions. Here’s what it prefers:

  • Sunlight: Full sun to partial shade (morning sun is especially appreciated)
  • Soil: Well-drained soils; tolerates poor, rocky, or sandy conditions
  • Water: Moderate water during establishment, then quite drought tolerant
  • Hardiness: Thrives in USDA zones 4-8, perfect for most Pacific Northwest gardens
  • pH: Adaptable to various soil pH levels

Planting and Care Tips

Getting Leiberg’s fleabane established in your garden is relatively straightforward:

  • Timing: Plant in spring after the last frost or in early fall
  • Spacing: Allow adequate space for natural spreading
  • Watering: Regular water the first season, then reduce as plants establish
  • Maintenance: Minimal pruning needed; you can deadhead spent flowers to encourage more blooms
  • Fertilizer: Generally unnecessary – too much nutrition can actually reduce flowering

The Bottom Line

Leiberg’s fleabane offers Pacific Northwest gardeners a chance to grow something truly special – a native wildflower that brings authentic regional beauty while supporting local pollinators. Its low-maintenance nature and drought tolerance make it a practical choice for busy gardeners, while its conservation status reminds us to be thoughtful stewards of our native plant heritage.

Just remember to source your plants responsibly, and you’ll be rewarded with a charming native that connects your garden to the broader Pacific Northwest landscape. Sometimes the most rewarding plants are the ones that belong right where you’re growing them.

Leiberg’s Fleabane

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

Asterales

Family

Asteraceae Bercht. & J. Presl - Aster family

Genus

Erigeron L. - fleabane

Species

Erigeron leibergii Piper - Leiberg's fleabane

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