North America Native Plant

Kauai Bottlebrush

Botanical name: Metrosideros waialealae var. fauriei

USDA symbol: MEWAF

Life cycle: perennial

Habit: shrub

Native status: Native to Hawaii  

Synonyms: Metrosideros polymorpha Gaudich. var. fauriei (Levl.) Skottsb. (MEPOF)   

Kauai Bottlebrush: A Rare Hawaiian Treasure for Your Garden Meet the Kauai bottlebrush (Metrosideros waialealae var. fauriei), a captivating Hawaiian native that’s as special as it sounds. This remarkable shrub belongs to the same family that gives us the iconic ohia lehua trees, but it’s got its own unique charm ...

Rare plant alert!

Region: Conservation status by state

Status: S3T3: Status is uncertain but is somewhere between the following rankings: Vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals ⚘ Subspecies or variety is vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals. ⚘

Kauai Bottlebrush: A Rare Hawaiian Treasure for Your Garden

Meet the Kauai bottlebrush (Metrosideros waialealae var. fauriei), a captivating Hawaiian native that’s as special as it sounds. This remarkable shrub belongs to the same family that gives us the iconic ohia lehua trees, but it’s got its own unique charm that makes it a standout choice for the right garden setting.

What Makes This Plant Special?

The Kauai bottlebrush is a true Hawaiian endemic, meaning it exists nowhere else on Earth except in the beautiful islands of Hawaii. As a perennial shrub, it typically grows as a multi-stemmed woody plant, usually staying under 13-16 feet tall, making it a manageable size for most garden spaces.

Where Does It Come From?

This native beauty calls Hawaii home, specifically originating from the lush landscapes of the Hawaiian Islands. It’s perfectly adapted to the unique climate and growing conditions found in this Pacific paradise.

Important Conservation Note

Here’s something crucial to know: the Kauai bottlebrush has a Global Conservation Status of S3T3, which indicates it’s a species of conservation concern. This means it’s relatively rare and needs our protection. If you’re considering adding this plant to your garden, it’s essential to source it responsibly from reputable native plant nurseries that propagate their own stock rather than collecting from wild populations.

Why Consider Growing Kauai Bottlebrush?

There are several compelling reasons to include this native Hawaiian shrub in your landscape:

  • You’ll be supporting native biodiversity and conservation efforts
  • It’s perfectly adapted to Hawaiian growing conditions
  • As a member of the Metrosideros family, it likely shares some of the attractive flowering characteristics of its relatives
  • Its shrub form makes it versatile for various landscape uses

Garden Design and Landscape Use

The Kauai bottlebrush works wonderfully in native Hawaiian gardens and landscapes that celebrate indigenous flora. Its shrub form makes it suitable for:

  • Mixed native plant borders
  • Foundation plantings
  • Naturalized landscape areas
  • Conservation gardens focused on rare Hawaiian plants

Growing Conditions and Care

While specific growing requirements for this particular variety aren’t widely documented, we can make educated assumptions based on its native habitat and family characteristics. Like most Hawaiian natives, it likely prefers:

  • Well-draining soil
  • Adequate moisture without waterlogging
  • Protection from harsh winds when young
  • Growing conditions that mimic its natural Hawaiian environment

A Responsible Choice for Hawaiian Gardens

If you’re gardening in Hawaii or have the right climate conditions elsewhere, the Kauai bottlebrush can be a meaningful addition to your landscape. Just remember the golden rule: always source your plants from reputable nurseries that propagate their own stock. Never collect from wild populations, as this can harm the already vulnerable native populations.

By choosing to grow this rare Hawaiian native, you’re not just adding beauty to your garden – you’re becoming part of the conservation story and helping ensure that future generations can enjoy this unique piece of Hawaii’s natural heritage.

The Bottom Line

The Kauai bottlebrush is a special plant for gardeners who appreciate rare natives and want to support conservation efforts. While it requires responsible sourcing due to its conservation status, it offers the reward of growing a truly unique Hawaiian endemic that connects your garden to the islands’ irreplaceable natural heritage.

Kauai Bottlebrush

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

Myrtales

Family

Myrtaceae Juss. - Myrtle family

Genus

Metrosideros Banks ex Gaertn. - lehua

Species

Metrosideros waialealae (Rock) Rock - Kauai bottlebrush

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