North America Native Plant

Eared Hedgemustard

Botanical name: Sisymbrium auriculatum

USDA symbol: SIAU2

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Coelophragmus auriculatus (A. Gray) O.E. Schulz (COAU5)   

Eared Hedgemustard: A Native Texas Wildflower Worth Knowing If you’re passionate about native Texas plants, you might have stumbled across the intriguing name eared hedgemustard. This little-known native wildflower, scientifically called Sisymbrium auriculatum, represents one of those hidden gems in the vast tapestry of Lone Star State flora that deserves ...

Eared Hedgemustard: A Native Texas Wildflower Worth Knowing

If you’re passionate about native Texas plants, you might have stumbled across the intriguing name eared hedgemustard. This little-known native wildflower, scientifically called Sisymbrium auriculatum, represents one of those hidden gems in the vast tapestry of Lone Star State flora that deserves more attention from native plant enthusiasts.

Meet the Eared Hedgemustard

Eared hedgemustard belongs to the mustard family (Brassicaceae), the same plant family that gives us familiar garden crops like broccoli, kale, and radishes. As a native forb—essentially a non-woody herbaceous plant—this species has adapted to Texas conditions over thousands of years. You might also see it listed under its botanical synonym Coelophragmus auriculatus in older references.

Where Does It Call Home?

This native wildflower is currently documented in Texas, making it a true regional specialty. As a plant that’s native to the lower 48 states but with a seemingly limited current range, eared hedgemustard represents the kind of specialized native flora that makes each region unique.

Life Cycle and Growth Habits

Eared hedgemustard follows an annual to biennial life cycle, meaning it completes its growth in one to two years. As a forb, it lacks the woody stems of shrubs and trees, instead growing as a relatively soft-stemmed herbaceous plant. This growth pattern makes it a seasonal presence in the landscape rather than a permanent structural element.

Should You Grow Eared Hedgemustard?

Here’s where things get honest: eared hedgemustard falls into that category of native plants that are botanically fascinating but practically challenging for home gardeners. Limited cultivation information and seed availability make it more of a specialist’s plant than a mainstream garden choice.

Consider eared hedgemustard if you:

  • Are passionate about growing the most local native plants possible
  • Want to support regional biodiversity
  • Enjoy the challenge of growing uncommon natives
  • Are involved in habitat restoration projects

You might want alternatives if you:

  • Need reliable garden performance
  • Want widely available plants
  • Prefer plants with known cultivation requirements
  • Are new to native gardening

Growing Conditions and Care

Unfortunately, specific growing requirements for eared hedgemustard aren’t well-documented in standard horticultural sources. As a Texas native and member of the mustard family, it likely prefers:

  • Full sun to partial shade
  • Well-draining soil
  • Moderate water needs
  • Texas climate conditions

If you’re determined to grow this species, your best bet is connecting with native plant societies, botanical gardens, or university extension programs in Texas that might have experience with local mustard family plants.

The Bigger Picture

While eared hedgemustard might not be the showstopper centerpiece of your native garden, plants like these play important roles in maintaining regional ecosystem integrity. Every native species, no matter how small or seemingly insignificant, contributes to the complex web of relationships that support local wildlife, soil health, and environmental resilience.

Native Alternatives to Consider

If you’re drawn to the idea of native Texas mustard family plants but want something more garden-friendly, consider these alternatives:

  • Wild mustard species that are better documented
  • Native Texas wildflowers with similar seasonal interest
  • Other native forbs that support local ecosystems

Your local native plant society or master gardener program can help you identify the best regional choices for your specific location and garden goals.

The Bottom Line

Eared hedgemustard represents the fascinating diversity of native Texas flora, even if it’s not destined for mainstream garden fame. Whether you choose to seek out this particular species or opt for better-known natives, the important thing is supporting plants that belong in your local ecosystem. Sometimes the most valuable gardening lesson is learning that not every interesting plant needs to be in every garden—and that’s perfectly okay.

Eared Hedgemustard

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Dilleniidae

Order

Capparales

Family

Brassicaceae Burnett - Mustard family

Genus

Sisymbrium L. - hedgemustard

Species

Sisymbrium auriculatum A. Gray - eared hedgemustard

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