North America Native Plant

Palau Ponapea

Botanical name: Ponapea palauensis

USDA symbol: POPA13

Life cycle: perennial

Habit: tree

Native status: Native to Pacific Basin excluding Hawaii  

Synonyms: Ptychosperma palauense (Kaneh.) H.E. Moore & Fosberg (PTPA)   

Palau Ponapea: A Rare Pacific Palm for the Adventurous Gardener If you’re the type of gardener who gets excited about rare, hard-to-find plants, then Palau ponapea (Ponapea palauensis) might just catch your attention. This native Pacific palm is about as uncommon as they come in the gardening world, and there’s ...

Palau Ponapea: A Rare Pacific Palm for the Adventurous Gardener

If you’re the type of gardener who gets excited about rare, hard-to-find plants, then Palau ponapea (Ponapea palauensis) might just catch your attention. This native Pacific palm is about as uncommon as they come in the gardening world, and there’s a good reason why you’ve probably never heard of it.

What is Palau Ponapea?

Palau ponapea is a perennial palm tree that’s native to the Pacific Basin, specifically found in Guam and Palau. As a true tree, it typically grows with a single trunk and can reach heights greater than 13-16 feet under the right conditions. You might also see it listed under its synonym, Ptychosperma palauense, in some botanical references.

Where Does It Come From?

This palm calls the tropical islands of Guam and Palau home, where it grows as part of the native Pacific flora. These small island nations in the western Pacific Ocean provide the specific conditions this palm has evolved to thrive in over thousands of years.

The Reality Check: Should You Plant It?

Here’s where we need to have an honest conversation. While Palau ponapea sounds exotic and exciting, there are some significant challenges you’ll face if you’re considering adding it to your garden:

  • Extremely limited availability – you’re unlikely to find this plant at your local nursery or even specialty palm dealers
  • Very little cultivation information exists, making successful growing a real challenge
  • Unknown growing requirements mean you’d be experimenting without much guidance
  • No established track record in home gardens

Growing Conditions and Care

Unfortunately, specific growing conditions, USDA hardiness zones, and care requirements for Palau ponapea are not well-documented. This lack of information makes it nearly impossible to provide reliable guidance for home cultivation. What we do know is that it comes from tropical Pacific islands, suggesting it would need:

  • Warm, tropical conditions year-round
  • High humidity
  • Protection from cold temperatures
  • Well-draining soil

Better Alternatives for Your Garden

Instead of chasing this elusive palm, consider these more readily available options that can give you that tropical Pacific feel:

  • If you’re in a suitable climate zone, look for other native Pacific palms that are better established in cultivation
  • Consider well-known tropical palms that thrive in gardens and have established care requirements
  • Focus on native plants from your own region that will be easier to grow and support local ecosystems

The Bottom Line

While Palau ponapea is undoubtedly an interesting species from a botanical perspective, it’s not a practical choice for most gardeners. The lack of available plants, growing information, and cultivation experience makes it more of a botanical curiosity than a garden-worthy addition. Your time and energy would be better spent on plants that are not only easier to obtain and grow but also have proven track records of success in home landscapes.

If you’re drawn to rare palms, consider connecting with botanical gardens or palm societies where you might encounter this species in a conservation setting – sometimes the best way to appreciate a rare plant is to admire it where it’s being properly cared for by experts.

Palau Ponapea

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Arecidae

Order

Arecales

Family

Arecaceae Bercht. & J. Presl - Palm family

Genus

Ponapea Becc. - ponapea

Species

Ponapea palauensis Kaneh. - Palau ponapea

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