Native Plants

Hana Clermontia

Clermontia samuelii samuelii

USDA symbol: CLSAS

perennial shrub

Hawaii: native

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. The Hana clermontia is a perennial shrub ...

Hana Clermontia may be listed as rare in your area.
Global Conservation Status

Status: S1T1 | Critically imperiled: Extremely rare. Typically 5 or fewer occurrences or under 1,000 remaining individuals.

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.

  • Species observed
  • No observations

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.

Clermontia samuelii samuelii is also known as...

Often we refer to plants by their common names. When shopping for plants the scientific name is the best way to positively identify the plant species you desire. But some plants have more than one name! While it doesn't happen often, nurseries might display one name while you're searching for another. Clermontia samuelii samuelii is also known as:

Clermontia rosacea | USDA symbol: CLRO4

Why do some plants have more than one name? Over time plant species may be renamed for a few reasons:

  1. Botanists in different regions named the same plant without knowing it had already been classified.
  2. A species was reclassified after scientific advances in, for example, DNA analysis.
  3. Slight variations within a species are sometimes mistakenly identified as entirely new species.

Classification

Group: Dicot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicotyledons
Subclass: Asteridae
Order: Campanulales
Family: Campanulaceae Juss. - Bellflower family
Genus: Clermontia Gaudich. - clermontia

Species: Clermontia samuelii Forbes - Hana clermontia

Subspecies: Clermontia samuelii Forbes ssp. samuelii - 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