North America Native Plant

Hana Clermontia

Botanical name: Clermontia samuelii samuelii

USDA symbol: CLSAS

Life cycle: perennial

Habit: shrub

Native status: Native to Hawaii  

Synonyms: Clermontia rosacea H. St. John (CLRO4)   

Hana Clermontia: A Rare Hawaiian Treasure Worth Protecting Meet the Hana clermontia (Clermontia samuelii samuelii), one of Hawaii’s most precious and elusive native shrubs. This remarkable plant isn’t just another pretty face in the tropical garden world – it’s a conservation priority that tells the story of Hawaii’s unique botanical ...

Rare plant alert!

Region: Conservation status by state

Status: S1T1: 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) ⚘ Subspecies or variety is 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) ⚘

Hana Clermontia: A Rare Hawaiian Treasure Worth Protecting

Meet the Hana clermontia (Clermontia samuelii samuelii), one of Hawaii’s most precious and elusive native shrubs. This remarkable plant isn’t just another pretty face in the tropical garden world – it’s a conservation priority that tells the story of Hawaii’s unique botanical heritage.

What Makes Hana Clermontia Special?

The Hana clermontia is a perennial shrub that typically grows as a multi-stemmed woody plant, usually reaching heights of 13 to 16 feet under ideal conditions. Like many Hawaiian natives, this plant has evolved in isolation, developing characteristics found nowhere else on Earth. You might also see it referenced by its botanical synonym, Clermontia rosacea H. St. John, in older botanical literature.

Where Does It Call Home?

This endemic Hawaiian beauty is found exclusively in Hawaii, with its natural habitat concentrated in the lush landscapes of East Maui. As a true island endemic, the Hana clermontia has spent thousands of years adapting to Hawaii’s unique climate and ecosystem conditions.

A Critical Conservation Concern

Here’s the important part: The Hana clermontia carries a Global Conservation Status of S1T1, which means it’s extremely rare and critically imperiled. This isn’t a plant you’ll find at your local garden center, and for good reason – every individual in the wild is precious.

If you’re passionate about growing this remarkable shrub, it’s crucial that you only obtain plants through responsible sources such as:

  • Certified native plant nurseries with proper collection permits
  • Plant conservation programs
  • Seed exchanges with documented provenance
  • Botanical gardens with propagation programs

Growing Challenges and Considerations

Let’s be honest – growing Hana clermontia isn’t for the casual gardener. This rare beauty has specific needs that mirror its natural Hawaiian rainforest habitat. While detailed cultivation information is limited due to its rarity, successful growing likely requires:

  • Tropical or subtropical climate conditions
  • High humidity levels
  • Protection from strong winds
  • Well-draining but moisture-retentive soil
  • Partial shade conditions

Why Consider This Plant?

Beyond its conservation value, the Hana clermontia offers gardeners a chance to:

  • Support Hawaiian native plant conservation efforts
  • Create authentic Hawaiian landscape designs
  • Contribute to preserving genetic diversity
  • Connect with Hawaii’s unique natural heritage

A Responsible Approach to Rare Plants

If you’re drawn to the idea of growing Hawaiian natives but want more readily available options, consider these alternatives that capture similar aesthetic appeal:

  • Other Clermontia species that are less rare
  • Hawaiian native shrubs like ʻōhia lehua varieties
  • Native Hawaiian understory plants

The Bottom Line

The Hana clermontia represents both the beauty and fragility of Hawaii’s native plant communities. While it’s not a beginner-friendly plant, dedicated gardeners with the right conditions and access to responsibly sourced material can play a vital role in this species’ conservation. Remember, every plant grown in cultivation is potentially one more step away from extinction for this remarkable Hawaiian endemic.

If you’re serious about growing rare Hawaiian natives, connect with local botanical gardens, native plant societies, and conservation organizations. They can provide guidance, proper plant sources, and ongoing support for your conservation gardening efforts.

Hana Clermontia

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

Campanulales

Family

Campanulaceae Juss. - Bellflower family

Genus

Clermontia Gaudich. - clermontia

Species

Clermontia samuelii Forbes - Hana clermontia

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