North America Native Plant

Maui Islandmint

Botanical name: Haplostachys truncata

USDA symbol: HATR2

Life cycle: perennial

Habit: forb

Native status: Native to Hawaii  

Maui Islandmint: A Ghost of Hawaii’s Native Flora If you’ve stumbled upon information about Maui islandmint while researching native Hawaiian plants for your garden, you’ve discovered one of Hawaii’s most elusive botanical treasures. But before you start planning where to plant this rare beauty, there’s an important story you need ...

Rare plant alert!

Region: Conservation status by state

Status: SH: Status is uncertain but is somewhere between the following rankings: Possibly Extinct: Known only from historical occurrences. Still some hope of rediscovery ⚘

Maui Islandmint: A Ghost of Hawaii’s Native Flora

If you’ve stumbled upon information about Maui islandmint while researching native Hawaiian plants for your garden, you’ve discovered one of Hawaii’s most elusive botanical treasures. But before you start planning where to plant this rare beauty, there’s an important story you need to know.

What is Maui Islandmint?

Maui islandmint (Haplostachys truncata) is a perennial herbaceous plant that belongs to the mint family. As a forb, it’s a non-woody plant that would have formed part of Hawaii’s understory vegetation. Like other mints, it likely had aromatic foliage and small flowers that attracted native pollinators.

This plant is endemic to Hawaii, meaning it evolved nowhere else on Earth. Specifically, it was native to the island of Maui, where it once grew in the island’s dry to mesic forest ecosystems at mid-elevations.

The Conservation Crisis

Here’s where the story takes a sobering turn. Maui islandmint has a Global Conservation Status of SH, which stands for Possibly Extirpated. In plain terms, this means the plant is known only from historical records, and there’s just a slim hope that it might still exist somewhere in the wild.

This classification puts Maui islandmint in botanical limbo – it may already be extinct, but scientists haven’t completely given up hope of rediscovering it in some remote corner of Maui’s forests.

Why You Can’t (and Shouldn’t Try to) Grow It

Given its critically endangered status, Maui islandmint is not available through normal gardening channels, and attempting to source it would be both futile and potentially harmful to any remaining wild populations. Here’s what responsible gardeners should know:

  • No verified seeds or plants are available for purchase
  • Any claims of available plant material should be viewed with extreme skepticism
  • Growing this species should only be attempted by professional conservationists with verified genetic material
  • Habitat restoration efforts are more valuable than individual gardening attempts

Supporting Conservation Instead

While you can’t grow Maui islandmint in your garden, you can still support Hawaiian native plant conservation:

  • Choose other native Hawaiian plants that are available through responsible sources
  • Support organizations working on Hawaiian forest restoration
  • Learn about and grow other native Hawaiian mint family relatives if available
  • Participate in habitat restoration volunteer opportunities on Maui

Alternative Native Hawaiian Plants

If you’re interested in native Hawaiian plants with similar characteristics, consider researching other native Hawaiian species that are more readily available and not at risk of extinction. Always source plants from reputable native plant nurseries that practice responsible propagation.

The Bigger Picture

Maui islandmint represents the fragility of island ecosystems and the importance of protecting native plant diversity. While we may not be able to enjoy this particular species in our gardens, its story serves as a powerful reminder of why supporting native plant conservation matters.

Every native plant we choose to grow in our gardens, every invasive species we remove, and every conservation organization we support brings us one step closer to protecting the botanical treasures that still remain – and perhaps even rediscovering those we thought were lost forever.

Maui Islandmint

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

Lamiales

Family

Lamiaceae Martinov - Mint family

Genus

Haplostachys (A. Gray) Hillebr. - haplostachys

Species

Haplostachys truncata (A. Gray) Hillebr. - Maui islandmint

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