North America Native Plant

Rio Grande Fleabane

Botanical name: Erigeron tenellus

USDA symbol: ERTE5

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Rio Grande Fleabane: A Delicate Texas Native Worth Growing Meet Rio Grande fleabane (Erigeron tenellus), a charming little wildflower that proves good things really do come in small packages. This delicate annual might not win any height contests in your garden, but what it lacks in stature, it more than ...

Rio Grande Fleabane: A Delicate Texas Native Worth Growing

Meet Rio Grande fleabane (Erigeron tenellus), a charming little wildflower that proves good things really do come in small packages. This delicate annual might not win any height contests in your garden, but what it lacks in stature, it more than makes up for in grace and ecological value.

What Makes Rio Grande Fleabane Special?

Rio Grande fleabane is a true Texas native, found exclusively in the Lone Star State. As a member of the sunflower family, this petite forb produces clusters of small, daisy-like flowers that dance in the breeze like tiny white and pink butterflies. The flowers feature crisp white to pale pink petals surrounding cheerful yellow centers, creating a cloud-like effect when planted in drifts.

Don’t let the common name fleabane put you off – it’s an old folk name that has nothing to do with actual fleas! This little beauty is all about attracting the good guys to your garden.

Where Does It Call Home?

Rio Grande fleabane is native to Texas, where it has adapted perfectly to the state’s unique growing conditions. This geographic specificity makes it an excellent choice for Texas gardeners looking to support local ecosystems and create authentic native plant communities.

Why Your Garden (and Local Wildlife) Will Love It

As an annual forb, Rio Grande fleabane brings several benefits to your landscape:

  • Pollinator magnet: The small flowers are perfectly sized for native bees, butterflies, and other beneficial insects
  • Low maintenance: Once established, this drought-tolerant native requires minimal care
  • Self-seeding: It readily reseeds itself, ensuring future generations in your garden
  • Authentic native appeal: Adds genuine Texas character to wildflower gardens and natural landscapes

Perfect Garden Spots for Rio Grande Fleabane

This adaptable little wildflower shines in several garden settings:

  • Native plant gardens and prairie restorations
  • Xeriscape and drought-tolerant landscapes
  • Wildflower meadows and naturalized areas
  • Rock gardens and areas with well-draining soil
  • Borders and edges where its delicate texture can soften harder landscape elements

Growing Rio Grande Fleabane Successfully

The good news? Rio Grande fleabane is refreshingly easy to grow, especially if you’re gardening in Texas where it naturally thrives.

Growing Conditions

This native appreciates full sun to partial shade and well-draining soils. It’s naturally drought-tolerant once established, making it perfect for water-wise gardening. Hardy in USDA zones 8-10, it’s well-suited to Texas’s climate extremes.

Planting Tips

The easiest way to establish Rio Grande fleabane is through direct seeding. Scatter seeds in fall or early spring, lightly rake them into the soil, and let nature do the rest. Since it’s an annual, plan for it to complete its entire life cycle in one growing season – but don’t worry, it typically self-seeds for next year’s show.

Care and Maintenance

Once your fleabane is established, step back and let it do its thing. These hardy natives need minimal supplemental water and no fertilization. In fact, too much pampering can actually reduce flowering and make plants leggy.

Is Rio Grande Fleabane Right for Your Garden?

If you’re a Texas gardener looking to create authentic native landscapes that support local wildlife, Rio Grande fleabane deserves a spot in your garden. Its delicate beauty, easy-care nature, and valuable ecosystem services make it a winner for both novice and experienced native plant enthusiasts.

While it may be small in stature, this little Texas native proves that sometimes the most valuable garden residents are the ones that work quietly behind the scenes, supporting the intricate web of life that makes our landscapes truly vibrant and sustainable.

Rio Grande Fleabane

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

Erigeron L. - fleabane

Species

Erigeron tenellus DC. - Rio Grande fleabane

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