North America Native Plant

Wavyleaf Twinevine

Botanical name: Funastrum crispum

USDA symbol: FUCR

Life cycle: perennial

Habit: vine

Native status: Native to the lower 48 states  

Synonyms: Sarcostemma crispum Benth. (SACR3)  âš˜  Sarcostemma lobata Waterf. (SALO5)   

Wavyleaf Twinevine: A Charming Native Climber for Southwestern Gardens Meet the wavyleaf twinevine (Funastrum crispum), a delightful native perennial that’s been quietly decorating the American Southwest long before gardening trends made going native cool. This understated climbing herb might not win any flashy flower contests, but it brings a subtle ...

Wavyleaf Twinevine: A Charming Native Climber for Southwestern Gardens

Meet the wavyleaf twinevine (Funastrum crispum), a delightful native perennial that’s been quietly decorating the American Southwest long before gardening trends made going native cool. This understated climbing herb might not win any flashy flower contests, but it brings a subtle charm and ecological value that makes it worth considering for your native plant collection.

What Makes Wavyleaf Twinevine Special?

As its common name suggests, this native climber is all about those distinctive wavy-edged leaves that give it character and visual interest. The botanical name Funastrum crispum might be a mouthful, but crispum refers to those lovely curled leaf margins that set this plant apart from other vines. You might also see it listed under its former scientific names, including Sarcostemma crispum.

This perennial herb belongs to the forb family, meaning it’s a non-woody vascular plant that dies back to ground level but returns year after year from its root system. Think of it as nature’s way of providing seasonal interest without the permanent commitment of a woody vine.

Where Does It Call Home?

Wavyleaf twinevine is a true native of the lower 48 states, specifically thriving across the Southwest. You’ll find wild populations scattered throughout Arizona, Colorado, New Mexico, Oklahoma, and Texas. This distribution tells us everything we need to know about its preferences: it loves those sunny, dry conditions that characterize much of the American Southwest.

Garden Appeal and Design Potential

While wavyleaf twinevine won’t overwhelm you with showy blooms, it offers a more subtle beauty. The small, cream to white flowers appear in delicate clusters, creating a soft, understated display that complements rather than competes with more dramatic native plants. The real star, however, is those characteristically wavy leaves that create interesting texture and movement in the garden.

This vine works beautifully as:

  • Ground cover in rock gardens
  • A climbing accent on trellises or fences
  • Filler in native plant borders
  • Part of a pollinator-friendly landscape

Perfect Garden Matches

Wavyleaf twinevine shines brightest in gardens that celebrate the natural beauty of the Southwest. It’s particularly well-suited for:

  • Xeriscapes and water-wise gardens
  • Desert-themed landscapes
  • Native plant gardens
  • Rock gardens and naturalized areas

If you’re creating a habitat garden focused on supporting local wildlife, this native vine fits right into the ecosystem puzzle that butterflies and other small pollinators have been depending on for generations.

Growing Conditions That Make It Happy

Like most southwestern natives, wavyleaf twinevine is refreshingly low-maintenance once you understand its needs. It thrives in USDA hardiness zones 7-10, making it suitable for most areas within its native range and similar climates.

Here’s what this easygoing vine prefers:

  • Sun exposure: Full sun (6+ hours daily)
  • Soil: Well-draining soil is absolutely essential
  • Water: Drought tolerant once established; prefers dry conditions
  • Maintenance: Minimal care required

Planting and Care Tips

The secret to success with wavyleaf twinevine is thinking like a desert plant. Here’s how to give it the best start:

Planting: Spring is your best bet for planting, giving the roots time to establish before facing their first winter. Choose a location with excellent drainage – this cannot be overstated. If your soil holds water, consider raised beds or slopes.

Watering: Water regularly the first season to help establishment, then back off significantly. Once mature, this vine actually prefers to stay on the dry side and can handle extended drought periods.

Seasonal behavior: Don’t panic if your wavyleaf twinevine seems to disappear in winter. As an herbaceous perennial, it naturally dies back to ground level and regrows from the roots when conditions are right.

Supporting Local Wildlife

While we don’t have extensive data on all the wildlife benefits of wavyleaf twinevine, its native status means it has co-evolved with local ecosystems. The small flowers provide nectar for butterflies and other small pollinators, making it a valuable addition to any wildlife-friendly garden. Native plants like this one support the complex web of relationships between plants, pollinators, and other wildlife that non-native alternatives simply can’t replicate.

Is Wavyleaf Twinevine Right for Your Garden?

Consider adding wavyleaf twinevine to your garden if you:

  • Garden in the Southwest or similar dry climate
  • Appreciate subtle, naturalistic beauty over flashy displays
  • Want to support native ecosystems and local wildlife
  • Prefer low-maintenance, drought-tolerant plants
  • Are creating a water-wise or desert-themed landscape

While it might not be the showstopper of your garden, wavyleaf twinevine brings that authentic sense of place that only native plants can provide. In a world of high-maintenance garden divas, sometimes the quiet, dependable natives are exactly what we need to create landscapes that are both beautiful and ecologically meaningful.

Wavyleaf Twinevine

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

Funastrum Fourn. - twinevine

Species

Funastrum crispum (Benth.) Schltr. - wavyleaf twinevine

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