North America Native Plant

Coahuila Blazingstar

Botanical name: Mentzelia pachyrhiza

USDA symbol: MEPA4

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Coahuila Blazingstar: A Rare Texas Native Worth Protecting If you’ve never heard of Coahuila blazingstar, you’re not alone. This little-known Texas native is one of the more mysterious members of the blazingstar family, and there’s a very good reason why it’s flying under the radar. What Makes Coahuila Blazingstar Special ...

Coahuila Blazingstar: A Rare Texas Native Worth Protecting

If you’ve never heard of Coahuila blazingstar, you’re not alone. This little-known Texas native is one of the more mysterious members of the blazingstar family, and there’s a very good reason why it’s flying under the radar.

What Makes Coahuila Blazingstar Special

Coahuila blazingstar (Mentzelia pachyrhiza) is an annual forb that belongs to the stick-leaf family. Like its blazingstar cousins, it produces cheerful yellow flowers, but this particular species has carved out a very specific niche in the Lone Star State. As an annual, it completes its entire life cycle in just one growing season, making every year a fresh start for this resilient little wildflower.

Being a forb means it’s herbaceous rather than woody – think of it as nature’s way of creating a low-maintenance plant that puts all its energy into flowers and seeds rather than building permanent woody structure.

Where You’ll Find It (If You’re Lucky)

Here’s where things get interesting: Coahuila blazingstar is native to Texas, but its distribution is extremely limited. This isn’t a plant you’ll stumble across in your typical Texas wildflower field. Its range appears to be restricted to a very small area, likely in regions close to the Mexican state of Coahuila (hence the name).

The Rarity Factor: Why This Matters

Before you start planning to add Coahuila blazingstar to your native plant garden, there’s something crucial you need to know: this plant appears to be extremely rare. While we don’t have definitive conservation status information, its very limited distribution and sparse documentation in botanical literature suggest it’s not your average garden center find.

This rarity is actually what makes it so special from a conservation standpoint, but it also means we need to be extra thoughtful about how we interact with it.

Garden Appeal and Growing Considerations

Like other members of the Mentzelia family, Coahuila blazingstar likely produces attractive yellow flowers that would appeal to native plant enthusiasts. The flowers probably feature the characteristic star-shaped petals and prominent stamens that make blazingstars so charming.

However, given its rarity and specific habitat requirements, this isn’t a plant for the typical home garden. If you’re interested in growing rare Texas natives, you’ll want to:

  • Only obtain seeds or plants from reputable sources that can guarantee responsible collection
  • Consider it only if you’re serious about native plant conservation
  • Provide growing conditions that mimic its natural habitat (likely arid or semi-arid conditions)
  • Be prepared for the challenges that come with growing rare, specialized species

Better Alternatives for Your Garden

If you’re drawn to the idea of growing blazingstars but want something more readily available and garden-friendly, consider these Texas native alternatives:

  • Ten-petal blazingstar (Mentzelia decapetala)
  • Prairie blazingstar (Liatris pycnostachya)
  • Other native Mentzelia species that are less rare

These alternatives will give you similar aesthetic appeal while being much more sustainable choices for home gardeners.

Supporting Conservation

The best way to help Coahuila blazingstar is to support organizations working to document and protect Texas’s rare plant species. Consider contributing to botanical surveys, native plant societies, or conservation groups that focus on protecting habitat rather than removing plants from the wild.

Sometimes the most loving thing we can do for a rare plant is to admire it from afar and work to protect the places where it naturally thrives. Coahuila blazingstar is a reminder that Texas’s botanical diversity includes some true hidden gems that deserve our respect and protection.

The Bottom Line

While Coahuila blazingstar is undoubtedly a fascinating native plant, it’s not one for the typical garden. Its rarity makes it more suited for specialized conservation collections than backyard landscaping. If you’re passionate about Texas natives, there are plenty of other beautiful, more common species that can give you that authentic Lone Star State feel without the conservation concerns.

Remember: the goal of native gardening is to support local ecosystems, and sometimes that means choosing the natives that are abundant enough to share rather than those that need every individual left in the wild.

Coahuila Blazingstar

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

Violales

Family

Loasaceae Juss. - Loasa family

Genus

Mentzelia L. - blazingstar

Species

Mentzelia pachyrhiza I.M. Johnst. - Coahuila blazingstar

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