North America Non-native Plant

Pseudogynoxys

Botanical name: Pseudogynoxys

USDA symbol: PSEUD15

Life cycle: perennial

Habit: vine

Native status: Non-native, reproduces and persists in the wild in Hawaii âš˜ Non-native, reproduces and persists in the wild in the lower 48 states âš˜ Non-native, reproduces and persists in the wild in Puerto Rico âš˜ Non-native, reproduces and persists in the wild in the U.S. Virgin Islands  

Pseudogynoxys: The Bright and Bold Climbing Vine You Should Know About If you’ve ever spotted a vibrant orange climbing vine cascading over a fence or sprawling across a garden bed, chances are you’ve encountered pseudogynoxys. This eye-catching perennial vine brings a burst of tropical color wherever it grows, though it ...

Pseudogynoxys: The Bright and Bold Climbing Vine You Should Know About

If you’ve ever spotted a vibrant orange climbing vine cascading over a fence or sprawling across a garden bed, chances are you’ve encountered pseudogynoxys. This eye-catching perennial vine brings a burst of tropical color wherever it grows, though it comes with some important considerations for gardeners.

What Exactly Is Pseudogynoxys?

Pseudogynoxys is a twining and climbing plant that belongs to the sunflower family. With its relatively long stems that can be either woody or herbaceous, this vigorous grower has made itself at home in warm climates across the United States. You’ll find it brightening up landscapes in Florida, Hawaii, Texas, Puerto Rico, and the Virgin Islands.

Originally from Central and South America, pseudogynoxys is what botanists call a non-native species. It’s been introduced to these U.S. locations and has proven quite capable of reproducing on its own in the wild, persisting without any human help.

The Visual Appeal: Why Gardeners Fall for This Vine

Let’s be honest – pseudogynoxys knows how to make an entrance. This climbing beauty produces cheerful, daisy-like flowers in brilliant shades of orange and yellow that seem to glow against its heart-shaped, bright green leaves. The blooms appear almost year-round in suitable climates, creating a continuous display that’s hard to ignore.

The vine’s climbing nature makes it incredibly versatile in landscape design. It can:

  • Scale trellises and arbors for vertical interest
  • Cover unsightly fences or walls
  • Cascade from hanging baskets or elevated planters
  • Serve as a colorful ground cover if left to sprawl

Growing Conditions: What This Vine Needs to Thrive

Pseudogynoxys is remarkably easy-going when it comes to growing conditions, which partly explains its success as an introduced species. Here’s what it prefers:

  • Sunlight: Full sun to partial shade (though more sun typically means more flowers)
  • Soil: Well-draining soil of almost any type
  • Water: Regular watering, but it’s quite drought-tolerant once established
  • Climate: Thrives in USDA zones 9-11, but can be grown as an annual in cooler areas

Planting and Care Tips

Getting pseudogynoxys established is refreshingly straightforward:

  • Plant in spring after the last frost date
  • Provide some type of support structure if you want it to climb
  • Water regularly during the first growing season
  • Fertilize monthly during growing season for best flower production
  • Prune as needed to control size and shape

Fair warning: this vine can be quite the vigorous grower. Some gardeners love this trait, while others find it a bit overwhelming. Regular pruning will keep it in bounds if needed.

Benefits for Pollinators

One of pseudogynoxys’s redeeming qualities is its appeal to pollinators. The bright flowers attract butterflies and other nectar-seeking insects, making it a valuable addition to pollinator-friendly gardens.

Should You Plant Pseudogynoxys?

This is where things get a bit nuanced. While pseudogynoxys isn’t currently listed as invasive, its non-native status and ability to self-seed means it’s worth considering some alternatives, especially if you’re committed to native gardening.

If you do choose to grow pseudogynoxys, consider these native alternatives that offer similar benefits:

  • Coral honeysuckle (Lonicera sempervirens) for climbing color
  • Trumpet vine (Campsis radicans) for orange flowers and hummingbird appeal
  • Passion vine (Passiflora species) for unique flowers and butterfly habitat

That said, if you’re drawn to pseudogynoxys for its reliable color and easy-care nature, it can certainly have a place in tropical and subtropical gardens. Just be prepared for its enthusiastic growth habit and consider keeping it contained to prevent unwanted spread.

The Bottom Line

Pseudogynoxys delivers on its promise of bright, cheerful color with minimal fuss. While it may not be the most ecologically conscious choice for native plant enthusiasts, it has earned its place in many warm-climate gardens through sheer reliability and visual impact. Whether you choose to grow it or opt for a native alternative, understanding this common climbing vine helps you make informed decisions for your landscape.

Pseudogynoxys

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

Pseudogynoxys (Greenm.) Cabrera - pseudogynoxys

Species

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