North America Native Plant

Texas Ragwort

Botanical name: Senecio ampullaceus

USDA symbol: SEAM2

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Texas Ragwort: A Rare Native Wildflower Worth Protecting If you’re passionate about native plants and conservation, you might be intrigued by Texas ragwort (Senecio ampullaceus), a little-known annual wildflower that’s quietly hanging on in a few scattered locations across the South. This humble member of the sunflower family might not ...

Rare plant alert!

Region: Texas

Status: S1: Status is uncertain but is somewhere between the following rankings: Critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘

Texas Ragwort: A Rare Native Wildflower Worth Protecting

If you’re passionate about native plants and conservation, you might be intrigued by Texas ragwort (Senecio ampullaceus), a little-known annual wildflower that’s quietly hanging on in a few scattered locations across the South. This humble member of the sunflower family might not be the showiest plant in your garden, but it carries the important distinction of being one of our region’s rarest native species.

What Makes Texas Ragwort Special

Texas ragwort is an annual forb, which simply means it’s a non-woody flowering plant that completes its entire life cycle in one growing season. Unlike the perennials that return year after year, this plant puts all its energy into producing seeds before winter arrives, relying on those seeds to carry on the next generation.

As a native species to the lower 48 states, Texas ragwort has been quietly adapting to our regional conditions for thousands of years. It belongs to the Senecio genus, a large group of plants commonly known as ragworts or groundsels, many of which produce cheerful yellow daisy-like flowers.

Where You’ll Find Texas Ragwort

This rare wildflower has a limited natural range, currently documented in Arkansas, Louisiana, Missouri, and Texas. However, don’t expect to stumble across it on your next nature walk—Texas ragwort is critically rare, holding an S1 conservation status in both Arkansas and Texas, meaning it’s at serious risk of disappearing from these states entirely.

The Rarity Factor: Why This Matters

Here’s where things get serious: Texas ragwort is what botanists call critically imperiled. This S1 status means there are very few known populations left, and the species faces a real risk of extinction in these areas. For gardeners, this presents both an opportunity and a responsibility.

If you’re considering adding Texas ragwort to your native plant collection, you absolutely must source it responsibly. This means:

  • Never collecting seeds or plants from wild populations
  • Only purchasing from reputable native plant nurseries that can verify ethical propagation
  • Participating in legitimate seed collection programs led by conservation organizations
  • Supporting botanical gardens and conservation groups working to preserve this species

Growing Texas Ragwort: What We Know

Unfortunately, detailed growing information for Texas ragwort is limited due to its rarity and the lack of cultivation experience. As an annual native to the South, it likely prefers growing conditions similar to its natural habitat, though specific requirements for soil type, moisture, and light exposure aren’t well-documented in horticultural literature.

What we do know is that as a forb, it doesn’t develop woody stems and likely dies back completely after producing seeds. Like many native annuals, it probably performs best when allowed to self-seed naturally rather than being replanted each year.

Should You Grow Texas Ragwort?

The answer depends on your commitment to conservation and your ability to source plants ethically. If you’re a dedicated native plant enthusiast with connections to conservation programs or specialized native plant nurseries, growing Texas ragwort could be a meaningful way to participate in preserving a rare species.

However, if you’re simply looking for attractive native annuals for your garden, there are many other Senecio species and native wildflowers that are more readily available and don’t carry the conservation concerns. Consider golden ragwort (Packera aurea) or other native members of the sunflower family that can provide similar ecological benefits without the rarity issues.

The Bigger Picture

Texas ragwort serves as a reminder that not all native plants are equally common or easy to grow. Some, like this little annual, need our help to survive. Whether or not you choose to grow it, simply knowing about Texas ragwort and its conservation status makes you a more informed native plant gardener.

By supporting native plant conservation, choosing responsibly sourced plants, and spreading awareness about rare species, we can all play a role in preserving the incredible diversity of plants that make our regional ecosystems so special.

Texas Ragwort

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

Senecio L. - ragwort

Species

Senecio ampullaceus Hook. - Texas ragwort

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