North America Native Plant

Burbark

Botanical name: Triumfetta

USDA symbol: TRIUM

Life cycle: annual

Habit: subshrub

Native status: Non-native, reproduces and persists in the wild in Hawaii âš˜ It's either native or not native in the lower 48 states âš˜ Native to Navassa Island âš˜ It's either native or not native in Pacific Basin excluding Hawaii âš˜ It's either native or not native in Puerto Rico âš˜ It's either native or not native in the U.S. Virgin Islands  

Burbark (Triumfetta): A Tropical Plant with Sticky Surprises If you’ve ever walked through a tropical area and found mysterious burr-like seeds clinging to your clothes, you might have encountered burbark! This quirky plant, scientifically known as Triumfetta, is a fascinating species that produces some of nature’s most effective hitchhiking seeds. ...

Burbark (Triumfetta): A Tropical Plant with Sticky Surprises

If you’ve ever walked through a tropical area and found mysterious burr-like seeds clinging to your clothes, you might have encountered burbark! This quirky plant, scientifically known as Triumfetta, is a fascinating species that produces some of nature’s most effective hitchhiking seeds. But is burbark right for your garden? Let’s dive into what makes this tropical plant tick.

What Is Burbark?

Burbark is a forb herb – essentially a non-woody plant that can be either annual or perennial depending on growing conditions. True to its classification as a forb, it lacks the significant woody tissue you’d find in shrubs or trees, instead growing as a leafy herbaceous plant with distinctive heart-shaped leaves and small yellow flowers.

Where Does Burbark Grow Naturally?

Here’s where things get interesting with burbark’s native status. While it’s considered native to Navassa Island, this plant has become quite the traveler. Currently, you can find Triumfetta growing in Florida, Georgia, Hawaii, Palau, Puerto Rico, U.S. Minor Outlying Islands, Virgin Islands, and Navassa Island. In most of these locations, it’s classified as non-native but has established itself successfully in the wild.

Should You Plant Burbark in Your Garden?

The decision to grow burbark depends on your gardening goals and location. Here are some factors to consider:

Reasons You Might Want Burbark:

  • Easy to grow with minimal care requirements
  • Attracts small pollinators like bees and flies with its yellow flowers
  • Interesting ethnobotanical significance
  • Tolerates poor soils where other plants struggle
  • Unique seed pods add textural interest

Reasons to Think Twice:

  • Non-native status in most US locations
  • Can self-seed readily and spread
  • Those sticky seed pods can be a nuisance
  • May compete with native vegetation

Growing Conditions and Care

If you decide to grow burbark, you’ll find it’s refreshingly low-maintenance. This plant thrives in USDA hardiness zones 9b through 11, making it suitable only for the warmest parts of the United States.

Ideal Growing Conditions:

  • Full sun to partial shade
  • Well-draining soils (though it tolerates poor conditions)
  • Warm, frost-free climates
  • Regular watering, but drought-tolerant once established

Planting and Care Tips:

  • Start from seeds, which germinate easily in warm conditions
  • Space plants adequately as they can spread
  • Minimal fertilization needed – this plant isn’t picky
  • Be prepared to manage self-seeding if you don’t want it spreading
  • Remove spent flowers to prevent excessive seed production

Garden Design Applications

Burbark works best in informal, naturalized garden settings or tropical-themed landscapes. It’s particularly suited for:

  • Ethnobotanical or educational gardens
  • Tropical garden collections
  • Areas where you want low-maintenance ground coverage
  • Wildlife gardens focused on attracting small pollinators

Consider Native Alternatives

Since burbark is non-native in most US locations, consider exploring native plants that might serve similar functions in your landscape. Your local native plant society or extension office can recommend indigenous species that provide comparable benefits while supporting local ecosystems.

The Bottom Line

Burbark is an easy-going plant that can add tropical flair to warm-climate gardens. While its non-native status in most US locations means it won’t support local ecosystems like native plants do, it’s not currently listed as invasive or noxious. If you choose to grow it, do so responsibly by preventing unwanted spread and consider pairing it with native plants that support local wildlife. Just remember – those sticky seed pods are nature’s way of ensuring this plant gets around, so be prepared for some hitchhiking surprises!

Burbark

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Dilleniidae

Order

Malvales

Family

Tiliaceae Juss. - Linden family

Genus

Triumfetta L. - burbark

Species

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