North America Native Plant

Bracted Phyllostegia

Botanical name: Phyllostegia bracteata

USDA symbol: PHBR6

Life cycle: perennial

Habit: vine

Native status: Native to Hawaii  

Bracted Phyllostegia: A Rare Hawaiian Treasure Worth Protecting Meet the bracted phyllostegia (Phyllostegia bracteata), one of Hawaii’s most precious and endangered native plants. This unassuming member of the mint family might not win any flashy flower contests, but it holds incredible value as part of Hawaii’s unique botanical heritage. Before ...

Rare plant alert!

Region: United States

Status: S1: Status is uncertain but is somewhere between the following rankings: Critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘ Endangered: In danger of extinction throughout all or a significant portion of its range. ⚘

Region: United States

Bracted Phyllostegia: A Rare Hawaiian Treasure Worth Protecting

Meet the bracted phyllostegia (Phyllostegia bracteata), one of Hawaii’s most precious and endangered native plants. This unassuming member of the mint family might not win any flashy flower contests, but it holds incredible value as part of Hawaii’s unique botanical heritage. Before we dive into growing this special plant, there’s something crucial you need to know about its conservation status.

A Plant on the Brink

Here’s the reality check: bracted phyllostegia is critically endangered. With a Global Conservation Status of S1, this means fewer than 5 populations likely exist in the wild, with less than 1,000 individual plants remaining. In the United States, it’s officially listed as Endangered. This isn’t just another pretty plant for your garden – it’s a living piece of Hawaiian natural history that desperately needs our help.

Where Does It Call Home?

Bracted phyllostegia is endemic to Hawaii, meaning it exists nowhere else on Earth. This perennial herb has evolved specifically within Hawaii’s unique ecosystems over thousands of years, making it an irreplaceable part of the islands’ biodiversity.

What Does It Look Like?

As a forb herb, bracted phyllostegia lacks the woody stems you’d find on shrubs or trees. Instead, it’s a soft-stemmed perennial that belongs to the mint family. Like its minty relatives, it produces small tubular flowers arranged in spikes or clusters, though you won’t find the aggressive spreading habit that makes some mints garden bullies. This Hawaiian native knows how to behave itself!

Should You Grow Bracted Phyllostegia?

The short answer? Only if you’re absolutely committed to conservation and can source plants responsibly. Here’s why this matters:

  • Conservation priority: Every plant grown helps preserve genetic diversity and potentially contributes to recovery efforts
  • Cultural significance: Supporting native Hawaiian plants honors indigenous botanical heritage
  • Unique garden element: You’ll have something truly special that exists nowhere else on the planet
  • Educational value: Growing endangered plants raises awareness about conservation

The Responsible Growing Approach

Source plants ethically: Only purchase from reputable native plant nurseries or botanical institutions involved in conservation programs. Never collect from the wild – this could push the species closer to extinction.

Growing Conditions and Care

If you’re in the right location and have access to responsibly sourced plants, here’s what bracted phyllostegia needs to thrive:

  • Climate: USDA zones 10-12 (essentially Hawaiian tropical conditions)
  • Soil: Well-draining soil that doesn’t stay soggy
  • Water: Moderate moisture – it’s classified as Facultative Upland, meaning it usually prefers non-wetland conditions but can tolerate some moisture
  • Light: Partial shade to full sun, mimicking its natural Hawaiian habitat
  • Maintenance: Minimal once established, but monitor carefully since stressed plants are more vulnerable

Garden Design Role

Bracted phyllostegia works best in:

  • Native Hawaiian plant gardens
  • Conservation-focused landscapes
  • Educational botanical displays
  • Specialized rare plant collections

This isn’t a plant for casual landscaping – it’s for gardeners who understand they’re participating in active conservation.

Supporting Native Pollinators

As a member of the mint family, bracted phyllostegia likely provides nectar and pollen for native Hawaiian insects. By growing this plant, you’re supporting not just one endangered species, but potentially helping sustain entire pollinator networks that evolved alongside it.

The Bottom Line

Growing bracted phyllostegia isn’t about adding another pretty plant to your collection – it’s about becoming a conservation partner. If you’re in Hawaii or have the right growing conditions elsewhere, and you can source plants through legitimate conservation channels, you’ll be participating in one of the most important gardening acts possible: helping prevent extinction.

Remember, with great plants comes great responsibility. This little Hawaiian herb is counting on people like you to help it survive for future generations. Are you up for the challenge?

Bracted Phyllostegia

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

Phyllostegia Benth. - phyllostegia

Species

Phyllostegia bracteata Sherff - bracted phyllostegia

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