North America Native Plant

Swanflower

Botanical name: Aristolochia erecta

USDA symbol: ARER

Life cycle: perennial

Habit: vine

Native status: Native to the lower 48 states  

Synonyms: Aristolochia longiflora Engelm. & A. Gray (ARLO10)   

Swanflower: A Hidden Gem for Texas Native Plant Gardens Meet the swanflower (Aristolochia erecta), a quirky little native perennial that might not win any beauty contests but certainly deserves a spot in your wildlife garden. This unassuming Texas native has some serious hidden talents that make it a must-have for ...

Swanflower: A Hidden Gem for Texas Native Plant Gardens

Meet the swanflower (Aristolochia erecta), a quirky little native perennial that might not win any beauty contests but certainly deserves a spot in your wildlife garden. This unassuming Texas native has some serious hidden talents that make it a must-have for butterfly enthusiasts and native plant lovers alike.

What Makes Swanflower Special?

Swanflower is a perennial herb that stays relatively low to the ground, making it perfect for naturalized areas where you want something interesting but not overwhelming. Also known by its synonym Aristolochia longiflora, this little plant produces small, tubular brownish-purple flowers that curve in an almost pipe-like shape. While they won’t stop traffic with their beauty, these unique blooms have a fascinating story to tell.

Where Does Swanflower Call Home?

This native gem is proudly Texan, naturally occurring throughout the Lone Star State. As a true native of the lower 48 states, swanflower has been quietly doing its thing in Texas landscapes long before any of us arrived on the scene.

Why Your Garden (and Local Wildlife) Will Love It

Here’s where swanflower really shines: it’s the exclusive host plant for the stunning pipevine swallowtail butterfly. If you’ve ever wanted to attract these gorgeous black butterflies with their iridescent blue hindwings to your garden, swanflower is your ticket. The female butterflies will lay their eggs specifically on this plant, and the caterpillars depend on it for survival.

Beyond butterflies, the unusual flowers attract small flies and gnats, adding to your garden’s biodiversity. It’s not flashy, but it’s incredibly functional from an ecological standpoint.

Perfect Garden Situations

Swanflower works beautifully in:

  • Native plant gardens
  • Butterfly gardens
  • Wildlife habitat areas
  • Naturalized landscapes
  • Areas where you want low-maintenance, drought-tolerant plants

Growing Swanflower Successfully

The good news? Swanflower is refreshingly easy to grow. This hardy perennial thrives in USDA hardiness zones 8-10, making it perfect for most of Texas and similar climates.

Ideal Growing Conditions:

  • Well-draining soil (it’s not picky about soil type)
  • Partial shade to full sun
  • Minimal water once established – this plant loves Texas heat and drought
  • Good air circulation

Planting and Care Tips

Getting swanflower established is straightforward. Plant it in spring after the last frost, giving it space to spread since it can expand via underground rhizomes. Water regularly during its first growing season to help establish a strong root system, then step back and let nature take over.

This is truly a plant it and forget it kind of native. Once established, swanflower requires virtually no maintenance. It’s drought tolerant, deer resistant (thanks to compounds that make it unpalatable to most mammals), and generally pest-free.

Should You Plant Swanflower?

If you’re passionate about native plants, supporting local wildlife, or specifically want to attract pipevine swallowtail butterflies, swanflower is an excellent choice. It won’t be the star of your garden’s beauty show, but it will be working hard behind the scenes to support your local ecosystem.

This plant is perfect for gardeners who appreciate functionality over flashiness and want to create habitat for native wildlife. Plus, there’s something deeply satisfying about growing a plant that’s been thriving in Texas soil for generations.

Just remember that swanflower can spread via rhizomes, so give it room to roam or plant it where its wandering won’t cause issues. For most gardeners, this spreading habit is actually a bonus – more plants, more butterfly habitat, and more native goodness in your landscape.

Swanflower

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Magnoliidae

Order

Aristolochiales

Family

Aristolochiaceae Juss. - Birthwort family

Genus

Aristolochia L. - dutchman's pipe

Species

Aristolochia erecta L. - swanflower

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