North America Native Plant

Necklace Tree

Botanical name: Ormosia calavensis

USDA symbol: ORCA12

Life cycle: perennial

Habit: tree

Native status: Native to Pacific Basin excluding Hawaii  

The Necklace Tree: A Rare Pacific Gem for Specialized Gardens If you’re looking for something truly unique in your garden, the necklace tree (Ormosia calavensis) might just catch your attention. This lesser-known member of the legume family brings an air of mystery and exotic appeal to landscapes, though it’s definitely ...

The Necklace Tree: A Rare Pacific Gem for Specialized Gardens

If you’re looking for something truly unique in your garden, the necklace tree (Ormosia calavensis) might just catch your attention. This lesser-known member of the legume family brings an air of mystery and exotic appeal to landscapes, though it’s definitely not your everyday garden center find.

What Is the Necklace Tree?

The necklace tree, also known as the bead tree, is a perennial woody tree that can grow quite impressive in size. Under ideal conditions, these beauties typically reach heights of 13-16 feet or more, developing into substantial specimens with a single trunk. Like many trees, they can sometimes develop a more shrub-like, multi-stemmed form when growing conditions aren’t perfect, but they’ll still maintain their distinctive character.

Where Does It Come From?

Here’s where things get interesting – and a bit challenging for most gardeners. The necklace tree is native to the Pacific Basin, specifically found growing naturally in Guam and Palau. This incredibly limited native range means it’s adapted to very specific island conditions that most of us simply can’t replicate in our home gardens.

Should You Plant a Necklace Tree?

This is where we need to have an honest conversation. While the necklace tree sounds absolutely fascinating, there are some practical considerations:

  • Extremely limited availability – you’re unlikely to find this at your local nursery
  • Specialized growing requirements adapted to Pacific island conditions
  • Unknown cold hardiness, likely limited to tropical or subtropical zones
  • Limited research on cultivation practices

Growing Conditions and Care

Unfortunately, specific growing information for Ormosia calavensis is quite limited due to its restricted range and rarity in cultivation. Based on its native habitat in Guam and Palau, we can make some educated guesses:

  • Likely requires warm, humid conditions year-round
  • Probably needs well-draining soil
  • May prefer partial shade to full sun
  • Regular moisture likely important

Without more specific cultivation data, growing this tree would be quite experimental and best left to experienced tropical plant enthusiasts or botanical gardens.

Better Alternatives for Your Garden

If you’re drawn to the idea of a unique tree with an exotic feel, consider these more readily available options that might give you similar satisfaction:

  • Other Ormosia species that are better documented and more available
  • Native trees from your own region that provide reliable performance
  • Well-established exotic trees with known growing requirements

The Bottom Line

While the necklace tree certainly has an intriguing name and unique origin story, it’s more of a botanical curiosity than a practical garden choice for most of us. Its extremely limited native range and lack of cultivation information make it a challenging prospect. If you’re absolutely determined to grow something in the Ormosia family, you’d be better served looking into other species with more documented growing requirements and better availability.

Sometimes the most beautiful plants are best admired in their native habitats or specialized botanical collections, and the necklace tree might just be one of those special cases.

Necklace Tree

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Fabales

Family

Fabaceae Lindl. - Pea family

Genus

Ormosia Jacks. - ormosia

Species

Ormosia calavensis Blanco - necklace tree

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