North America Native Plant

Bleached

Botanical name: Discocalyx mezii

USDA symbol: DIME12

Life cycle: perennial

Habit: tree

Native status: Native to Pacific Basin excluding Hawaii  

Bleached Tree (Discocalyx mezii): A Rare Pacific Native Worth Knowing About If you’re passionate about native plants and love discovering botanical rarities, you might be intrigued by the bleached tree, scientifically known as Discocalyx mezii. This perennial tree is one of those fascinating species that reminds us just how much ...

Bleached Tree (Discocalyx mezii): A Rare Pacific Native Worth Knowing About

If you’re passionate about native plants and love discovering botanical rarities, you might be intrigued by the bleached tree, scientifically known as Discocalyx mezii. This perennial tree is one of those fascinating species that reminds us just how much we still have to learn about our planet’s plant diversity.

What Makes the Bleached Tree Special?

The bleached tree is a native species found in the Pacific Basin, specifically documented in Guam and Palau. As a perennial woody plant, it typically grows with a single trunk and can reach impressive heights of 13-16 feet or more, though under certain environmental conditions, it may develop a multi-stemmed growth pattern or remain shorter than 13 feet.

This tree represents the incredible botanical diversity of Pacific island ecosystems, where many unique species have evolved in isolation over thousands of years.

The Challenge of Growing Discocalyx mezii

Here’s where things get interesting (and a bit challenging): Discocalyx mezii is what botanists call a poorly documented species. This means that while we know it exists and have some basic information about where it grows, many of the details that gardeners typically want to know remain mysteries.

We currently don’t have reliable information about:

  • Specific growing conditions and soil preferences
  • USDA hardiness zones
  • Propagation methods
  • Detailed care requirements
  • Pollinator relationships
  • Wildlife benefits

Should You Try to Grow It?

Given the limited information available, growing Discocalyx mezii presents significant challenges for most gardeners. Without knowing its specific growing requirements, hardiness zones, or even how to propagate it, successfully cultivating this tree would be extremely difficult.

Additionally, since this appears to be a rare species with a very limited native range, it’s crucial that any plant material be obtained through responsible, ethical sources that don’t impact wild populations.

Better Alternatives for Your Garden

If you’re drawn to Pacific native trees, consider researching other well-documented native species from your region that can provide similar ecological benefits while being much easier to grow and maintain. Your local native plant society or extension office can recommend appropriate alternatives that support local wildlife and ecosystems.

Contributing to Conservation

While you might not be able to grow Discocalyx mezii in your backyard, you can still appreciate its importance to Pacific island biodiversity. Supporting organizations that work to document and preserve rare plant species helps ensure that future generations might have better information about growing and conserving trees like the bleached tree.

Sometimes the most responsible thing we can do as gardeners is to admire certain plants from afar while we work to better understand their needs and conservation status.

Bleached

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

Primulales

Family

Myrsinaceae R. Br. - Myrsine family

Genus

Discocalyx (A. DC.) Mez

Species

Discocalyx mezii Hosok. - bleached

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