North America Native Plant

Rattlesnake Flower

Botanical name: Brazoria truncata

USDA symbol: BRTR

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Rattlesnake Flower: A Charming Texas Native for Your Wildflower Garden If you’re looking to add authentic Texas charm to your garden while supporting local wildlife, rattlesnake flower (Brazoria truncata) might just be the perfect addition to your landscape. Despite its somewhat intimidating name, this delightful annual has nothing scary about ...

Rattlesnake Flower: A Charming Texas Native for Your Wildflower Garden

If you’re looking to add authentic Texas charm to your garden while supporting local wildlife, rattlesnake flower (Brazoria truncata) might just be the perfect addition to your landscape. Despite its somewhat intimidating name, this delightful annual has nothing scary about it – unless you’re a gardener who prefers high-maintenance plants that demand constant attention!

What Is Rattlesnake Flower?

Rattlesnake flower is a native annual plant that belongs to Texas like bluebonnets and barbecue. This humble wildflower has been quietly beautifying the Lone Star State’s landscapes for countless generations, providing both visual appeal and ecological benefits without any of the drama that comes with non-native garden divas.

Where Does It Call Home?

This Texas native is naturally found throughout the state, with a particular fondness for the coastal prairie regions of south-central Texas. As a plant native to the lower 48 states, rattlesnake flower has spent centuries adapting to local conditions, making it a smart choice for gardeners who want plants that actually want to live in their yard.

Why Your Garden (and Local Wildlife) Will Love It

Here’s where rattlesnake flower really shines – it’s not just a pretty face in the garden. This hardworking annual provides significant nutritional value to large wildlife, contributing 5-10% of their diet. While it may not offer much in terms of shelter or cover, it more than makes up for this with its reliable food source for local fauna.

The small white to pale purple flowers arranged in terminal clusters also attract various native pollinators, including small bees and flies. It’s like hosting a tiny dinner party for beneficial insects right in your backyard!

Garden Design and Landscaping Role

Rattlesnake flower works beautifully in:

  • Wildflower meadows and prairie gardens
  • Low-maintenance native plant landscapes
  • Wildlife habitat gardens
  • Naturalized areas where you want that wild Texas look

While it won’t win any awards for being the showiest plant in your garden, its modest charm and reliable performance make it an excellent supporting player in native plant communities.

Growing Conditions and Care

Here’s the best news for busy gardeners: rattlesnake flower is refreshingly low-maintenance. This annual thrives in full sun and well-draining soils, and once established, it’s quite drought tolerant – perfect for Texas’s sometimes unpredictable weather patterns.

The plant performs best in USDA hardiness zones 8b through 10a, which covers most of southern Texas. If you’re gardening in this region, you’re already ahead of the game!

Planting and Care Tips

Growing rattlesnake flower is about as straightforward as native gardening gets:

  • When to plant: Direct seed in fall for best results
  • Soil preparation: Ensure good drainage – this plant doesn’t appreciate wet feet
  • Spacing: Allow plants room to spread naturally in wildflower settings
  • Watering: Minimal once established; drought tolerance is one of its superpowers
  • Maintenance: Practically none required – let it self-seed for future seasons

The Bottom Line

Rattlesnake flower may not be the flashiest plant you can grow, but it embodies everything that makes native gardening worthwhile: low maintenance, ecological benefits, and authentic regional character. If you’re creating a Texas native landscape, supporting local wildlife, or simply want a reliable annual that knows how to take care of itself, this unassuming wildflower deserves a spot in your garden.

Plus, there’s something satisfying about growing a plant that’s been thriving in your area long before anyone thought to import exotic alternatives. Sometimes the best garden plants are the ones that have been there all along, quietly doing their job and asking for nothing in return.

Wildlife Status

Want to attract wildlife or keep hungry critters away from your garden? Understanding the relationship between plants and wildlife is key. While plant tags may indicate deer and rabbit resistance, they don't tell the full story. Every gardener has experienced the disappointment of purchasing "deer-resistant" plants only to find them nibbled to the ground!

The extent to which plants are resistant to animal browsing is a matter of degree. Likewise, the extent to which a plant attracts wanted visitors also varies. Whether you want a garden full or free of wildlife, learning about interactions between a plant and wild animals can help you make smarter choices for the garden you desire.

As shown below Shrubby Indian Mallow isn't a large food source for animals or birds. You can confidently add this plant to your garden and rest assured knowing it's unlikely to be devoured by four-legged visitors.

Small animals

not a food source

not a source of cover

Large animals

5-10% of diet

Infrequently used as cover

Terrestrial birds

not a food source

not a source of cover

Water birds

not a food source

not a source of cover

Sources:

Everitt, J.H., D.L. Drawe, and R.I. Lonard. 1999. Field guide to the broad leaved herbaceous plants of South Texas used by livestock and wildlife. Texas Tech University Press. Lubbock.

Rattlesnake Flower

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

Lamiales

Family

Lamiaceae Martinov - Mint family

Genus

Brazoria Engelm. & A. Gray - Brazos-mint

Species

Brazoria truncata (Benth.) Engelm. & A. Gray - rattlesnake flower

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