North America Native Plant

Falfurrias Milkvine

Botanical name: Matelea radiata

USDA symbol: MARA5

Life cycle: perennial

Habit: vine

Native status: Native to the lower 48 states  

Falfurrias Milkvine: A Rare Texas Treasure Worth Protecting Meet the Falfurrias milkvine (Matelea radiata), a climbing perennial that’s as elusive as it is intriguing. This Texas native has earned quite the reputation—not for being flashy, but for being incredibly rare. In fact, it’s so scarce that botanists classify it as ...

Rare plant alert!

Region: Conservation status by state

Status: SH: Status is uncertain but is somewhere between the following rankings: Possibly Extinct: Known only from historical occurrences. Still some hope of rediscovery ⚘

Falfurrias Milkvine: A Rare Texas Treasure Worth Protecting

Meet the Falfurrias milkvine (Matelea radiata), a climbing perennial that’s as elusive as it is intriguing. This Texas native has earned quite the reputation—not for being flashy, but for being incredibly rare. In fact, it’s so scarce that botanists classify it as possibly extirpated, meaning it might only exist in historical records with just a glimmer of hope for rediscovery.

What Makes Falfurrias Milkvine Special?

Don’t let its understated appearance fool you. This twining vine may not win any beauty contests with its small, inconspicuous flowers, but it plays a crucial role in supporting local ecosystems. As a member of the milkweed family, it serves as a host plant for specialized butterflies and provides nectar for various pollinators.

The Falfurrias milkvine gets its name from its native stomping grounds around Falfurrias, Texas, in the Rio Grande Valley. This perennial climber can develop woody or herbaceous stems that twist and wind their way through other vegetation, creating a natural tapestry in the landscape.

Geographic Distribution and Rarity Status

Currently, Matelea radiata is known only from Texas, specifically the southern regions of the state. However, here’s where things get concerning: this plant has a Global Conservation Status of SH, meaning it’s possibly extirpated. Translation? We might have lost this species to history, though researchers haven’t given up hope entirely.

Should You Plant Falfurrias Milkvine?

The short answer: Only if you can source it responsibly.

Given its extremely rare status, planting Falfurrias milkvine comes with a big responsibility. If you’re lucky enough to find seeds or plants from verified, ethical sources, you could be participating in conservation efforts. However, never collect from wild populations—doing so could push this species closer to extinction.

Growing Conditions and Care

If you do manage to get your hands on responsibly sourced Falfurrias milkvine, here’s how to give it the best shot at thriving:

  • Climate: Suited for USDA hardiness zones 9-11
  • Sunlight: Full sun to partial shade
  • Soil: Well-draining soil is essential
  • Water: Drought tolerant once established; avoid overwatering
  • Support: Provide structures for climbing or let it ramble through other plants

Landscape Role and Design Ideas

In the right setting, Falfurrias milkvine works beautifully as:

  • A naturalistic ground cover that climbs through shrubs
  • An addition to native plant gardens focused on conservation
  • Part of a xeriscape design emphasizing drought-tolerant species
  • A conversation starter about plant conservation

Wildlife and Pollinator Benefits

Like other milkweeds, this species likely supports specialized butterflies and moths that have co-evolved with milkweed plants. The flowers, while small, provide nectar for various pollinators, making every plant a valuable resource for local wildlife.

The Bottom Line

Falfurrias milkvine represents both an opportunity and a responsibility. While it’s not the showiest plant you’ll ever grow, it embodies the importance of preserving our native plant heritage. If you’re passionate about conservation and can source this plant ethically, growing it could contribute to keeping this species from disappearing entirely.

Remember: with great rarity comes great responsibility. Only pursue this plant if you’re committed to proper care and ethical sourcing. Our native plant legacy depends on gardeners who understand that sometimes the most important plants aren’t the prettiest ones—they’re the ones that need our help the most.

Falfurrias Milkvine

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

Gentianales

Family

Asclepiadaceae Borkh. - Milkweed family

Genus

Matelea Aubl. - milkvine

Species

Matelea radiata Correll - falfurrias milkvine

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