Native Plants

Bolander’s Mule-ears

Agnorhiza bolanderi

USDA symbol: AGBO4

perennial forb

Lower 48 states: native

If you’re looking to add a splash of sunshine to your California native garden, let me introduce you to one of the Golden State’s more charming wildflowers: Bolander’s mule-ears (Agnorhiza bolanderi). Don’t let the quirky name fool you – this isn’t about actual mules! The mule-ears moniker comes from the ...

Bolander’s Mule-ears may be listed as rare in your area.
Global Conservation Status

Status: S3S4 | Apparently Secure: Uncommon but not rare, and usually widespread. Possible cause for longterm concern. Typically more than 100 occurrences in the state or more than 10,000 individuals.

Bolander’s Mule-Ears: A Golden Treasure for California Native Gardens

If you’re looking to add a splash of sunshine to your California native garden, let me introduce you to one of the Golden State’s more charming wildflowers: Bolander’s mule-ears (Agnorhiza bolanderi). Don’t let the quirky name fool you – this isn’t about actual mules! The mule-ears moniker comes from the plant’s distinctive large, fuzzy leaves that supposedly resemble, well, mule ears. Beauty is in the eye of the beholder, right?

What Makes Bolander’s Mule-Ears Special?

This perennial wildflower is a true California native, calling only the Golden State home. As a member of the sunflower family, Bolander’s mule-ears produces cheerful, bright yellow daisy-like flowers that can brighten up any garden space. The plant forms attractive rosettes of broad, silvery-green basal leaves that provide year-round interest, even when the flowers aren’t blooming.

Where Does It Grow Naturally?

Bolander’s mule-ears is endemic to California, meaning you won’t find it growing wild anywhere else in the world. It naturally occurs in the Sierra Nevada foothills and some coastal mountain ranges, where it has adapted beautifully to the state’s Mediterranean climate patterns.

  • Species observed
  • No observations

A Word of Caution: Rarity Matters

Before you rush out to plant Bolander’s mule-ears, here’s something important to know: this species has a conservation status that indicates it’s somewhat uncommon in the wild. While it’s not critically endangered, responsible gardeners should only source this plant from reputable native plant nurseries that propagate their stock ethically rather than wild-collecting. Think of it as being a good steward of California’s natural heritage!

Why Grow Bolander’s Mule-Ears?

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

  • Drought tolerance: Once established, it thrives with minimal summer water – perfect for water-wise gardening
  • Pollinator magnet: The bright yellow flowers attract native bees, butterflies, and other beneficial insects
  • Low maintenance: As a true native, it’s adapted to local conditions and requires little fussing once established
  • Unique beauty: The combination of silvery foliage and golden blooms adds distinctive texture and color to native plantings

Perfect Garden Settings

Bolander’s mule-ears shines in several garden styles:

  • Native California landscapes and restoration projects
  • Drought-tolerant and xeriscape gardens
  • Naturalized wildflower meadows
  • Wildlife and pollinator gardens
  • Mediterranean-style landscapes

Growing Conditions and Care

The good news is that Bolander’s mule-ears isn’t particularly fussy about growing conditions, as long as you respect its basic needs:

Climate: Best suited for USDA hardiness zones 7-10, which covers most of California’s populated areas.

Sun and Soil: Prefers full sun to partial shade and well-draining soil. It’s quite tolerant of poor soils – in fact, rich, fertile soil might make it too lush and prone to flopping over.

Water: Here’s where it gets easy – this plant is naturally adapted to California’s dry summers. Water regularly the first year to establish roots, then back off. Mature plants typically survive on rainfall alone in most California locations.

Planting and Care Tips

For the best success with Bolander’s mule-ears:

  • Plant in fall: This timing allows the plant to establish roots during the rainy season
  • Ensure good drainage: Poor drainage is probably the biggest threat to this plant’s survival
  • Start small: Young plants establish more easily than large specimens
  • Be patient: Like many natives, it may take a season or two to really show its stuff
  • Minimal fertilizer: Native plants rarely need fertilization and may actually perform worse with too much nutrition

The Bottom Line

Bolander’s mule-ears represents the best of California native gardening – beautiful, water-wise, wildlife-friendly, and perfectly adapted to local conditions. While you’ll need to source it responsibly due to its somewhat uncommon status, it’s absolutely worth seeking out for the right garden setting. Just remember: this isn’t a plant for formal, manicured landscapes, but rather for gardeners who appreciate the natural beauty and ecological benefits of California’s native flora.

If you’re ready to embrace the wild side of gardening and support local pollinators while conserving water, Bolander’s mule-ears might just be the golden addition your native garden has been waiting for!

Agnorhiza bolanderi is also known as...

Often we refer to plants by their common names. When shopping for plants the scientific name is the best way to positively identify the plant species you desire. But some plants have more than one name! While it doesn't happen often, nurseries might display one name while you're searching for another. Agnorhiza bolanderi is also known as:

Balsamorhiza bolanderi | USDA symbol: BABO3
Wyethia bolanderi | USDA symbol: WYBO

Why do some plants have more than one name? Over time plant species may be renamed for a few reasons:

  1. Botanists in different regions named the same plant without knowing it had already been classified.
  2. A species was reclassified after scientific advances in, for example, DNA analysis.
  3. Slight variations within a species are sometimes mistakenly identified as entirely new species.

Classification

Group: Dicot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicotyledons
Subclass: Asteridae
Order: Asterales
Family: Asteraceae Bercht. & J. Presl - Aster family
Genus: Agnorhiza (Jeps.) W.A. Weber - mule-ears

Species: Agnorhiza bolanderi (A. Gray) W.A. Weber - Bolander's mule-ears

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