North America Native Plant

Woolly Uncaria

Botanical name: Uncaria lanosa

USDA symbol: UNLA

Native status: Native to Pacific Basin excluding Hawaii  

Woolly Uncaria: A Rare Pacific Islander That’s Not for Every Garden Meet the woolly uncaria (Uncaria lanosa), a mysterious plant that’s about as elusive as it sounds. If you’re scratching your head wondering what this plant is all about, you’re not alone—this Pacific native is one of those botanical mysteries ...

Woolly Uncaria: A Rare Pacific Islander That’s Not for Every Garden

Meet the woolly uncaria (Uncaria lanosa), a mysterious plant that’s about as elusive as it sounds. If you’re scratching your head wondering what this plant is all about, you’re not alone—this Pacific native is one of those botanical mysteries that keeps even experienced gardeners guessing.

Where Does Woolly Uncaria Call Home?

Woolly uncaria is native to the Pacific Basin, with its primary home being the tropical paradise of Palau. This small island nation in the western Pacific Ocean is the natural habitat for this rare species, making it quite the exotic addition to any plant collection—if you can actually find it, that is.

The Reality Check: Why This Isn’t Your Average Garden Plant

Here’s the honest truth about woolly uncaria: it’s not exactly what you’d call a mainstream gardening choice. This plant falls into that category of botanical unicorns—species that are scientifically documented but rarely, if ever, show up in your local nursery or garden center.

The limited information available about this species suggests it’s best left to specialized botanical collections or researchers rather than home gardeners. Without clear data on its growth requirements, hardiness, or even basic care instructions, attempting to grow woolly uncaria would be more of a botanical experiment than a reliable landscaping choice.

What We Don’t Know (And Why That Matters)

The challenge with woolly uncaria is that many crucial growing details remain unknown, including:

  • Specific growing conditions and soil preferences
  • Cold tolerance and appropriate hardiness zones
  • Mature size and growth habits
  • Watering and care requirements
  • Propagation methods
  • Potential benefits to pollinators or wildlife

Better Alternatives for Your Garden

Instead of chasing after this elusive Pacific native, consider exploring well-documented native plants from your own region. Native plants offer proven benefits like:

  • Reliable growing information and care instructions
  • Support for local wildlife and pollinators
  • Better adaptation to your local climate
  • Availability from reputable nurseries

Your local native plant society or extension office can help you identify native species that will thrive in your specific area and provide the ecological benefits you’re looking for.

The Bottom Line

While woolly uncaria certainly sounds intriguing, it’s one of those plants that’s better admired from afar—or left to the specialists. For most gardeners, focusing on well-documented native species from your own region will give you much better results and contribute more meaningfully to your local ecosystem.

Sometimes the most gardening wisdom comes from knowing which plants to skip, and woolly uncaria might just be one of them—at least until more information becomes available about successfully growing this Pacific mystery plant.

Woolly Uncaria

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

Rubiales

Family

Rubiaceae Juss. - Madder family

Genus

Uncaria Schreb. - uncaria

Species

Uncaria lanosa Wall. - woolly uncaria

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