North America Native Plant

Lonestar Gumweed

Botanical name: Grindelia adenodonta

USDA symbol: GRAD2

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Grindelia microcephala DC. var. adenodonta Steyerm. (GRMIA)   

Lonestar Gumweed: A Rare Texas Native Worth Knowing About If you’re a Texas gardener with a passion for rare native plants, you might have stumbled across the name Lonestar gumweed (Grindelia adenodonta). This little-known annual wildflower is as Texan as they come, and while it may not be the showiest ...

Lonestar Gumweed: A Rare Texas Native Worth Knowing About

If you’re a Texas gardener with a passion for rare native plants, you might have stumbled across the name Lonestar gumweed (Grindelia adenodonta). This little-known annual wildflower is as Texan as they come, and while it may not be the showiest plant in your garden, it represents something special: a piece of the Lone Star State’s unique botanical heritage.

What is Lonestar Gumweed?

Lonestar gumweed is an annual forb, which is just a fancy way of saying it’s a soft-stemmed herbaceous plant that completes its entire life cycle in one growing season. Unlike woody shrubs or trees, this plant puts all its energy into growing, flowering, and producing seeds within a single year. It belongs to the sunflower family and shares the characteristic composite flower heads that make this plant family so recognizable.

You might occasionally see this plant listed under its scientific synonym, Grindelia microcephala var. adenodonta, but Grindelia adenodonta is the currently accepted name.

Where Does It Call Home?

This native Texan is found exclusively in Texas, making it a true state endemic. While many plants spread across multiple states or even countries, Lonestar gumweed has chosen to make Texas its one and only home. This limited distribution makes it particularly special for native plant enthusiasts who want to grow something truly local.

Should You Grow Lonestar Gumweed?

Here’s where things get a bit tricky. While Lonestar gumweed is undoubtedly a fascinating native plant, there’s limited information available about its cultivation requirements, availability, and specific growing needs. This scarcity of information often indicates that a plant is quite rare or has very specific habitat requirements that make it challenging to grow in typical garden settings.

The Reality of Rare Plants

As an annual plant with such a restricted range, Lonestar gumweed likely has very specific environmental needs that allow it to thrive in its natural Texas habitat. Without more research and cultivation experience, it’s difficult to recommend this plant for the average home gardener.

Better Native Alternatives

If you’re drawn to the idea of growing native Texas gumweeds, consider these more readily available alternatives:

  • Curlycup gumweed (Grindelia squarrosa) – More widely distributed and easier to find
  • Other native Texas sunflower family members – Maximilian sunflower, prairie sunflower, or native asters
  • Annual Texas wildflowers – Bluebonnets, Indian paintbrush, or poppies that are well-suited to cultivation

The Bottom Line

While Lonestar gumweed represents an interesting piece of Texas’s botanical diversity, it’s not a plant we can readily recommend for home gardens due to limited cultivation information and potential rarity. If you’re passionate about supporting Texas native plants, focus on the many well-documented native species that are available through reputable native plant nurseries.

Sometimes the best way to appreciate a rare native plant is to learn about it, respect its natural habitat, and support conservation efforts rather than attempting to grow it in our gardens. Save your gardening energy for the many other wonderful Texas natives that are waiting to bring local beauty and ecological benefits to your landscape!

Lonestar Gumweed

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

Grindelia Willd. - gumweed

Species

Grindelia adenodonta (Steyerm.) G.L. Nesom - Lonestar gumweed

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