North America Native Plant

Kokee Starviolet

Botanical name: Hedyotis knudsenii

USDA symbol: HEKN

Life cycle: perennial

Habit: vine

Native status: Native to Hawaii  

Kokee Starviolet: A Rare Hawaiian Treasure Worth Protecting Meet the Kokee starviolet (Hedyotis knudsenii), a charming little Hawaiian native that’s as special as it is scarce. This delicate shrub might not be the easiest plant to find at your local nursery, but for those passionate about Hawaiian native plants and ...

Rare plant alert!

Region: Conservation status by state

Status: S3: 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 ⚘

Kokee Starviolet: A Rare Hawaiian Treasure Worth Protecting

Meet the Kokee starviolet (Hedyotis knudsenii), a charming little Hawaiian native that’s as special as it is scarce. This delicate shrub might not be the easiest plant to find at your local nursery, but for those passionate about Hawaiian native plants and conservation gardening, it’s absolutely worth knowing about.

What Makes Kokee Starviolet Special?

The Kokee starviolet is a perennial shrub that typically stays compact and manageable in size. True to its name, this little beauty produces small, star-shaped white flowers that add a subtle but elegant touch to any native Hawaiian garden. As a multi-stemmed woody plant, it usually remains under 13-16 feet in height, making it perfect for smaller spaces or as part of a larger native plant collection.

Where Does It Call Home?

This endemic Hawaiian species is found exclusively in Hawaii, where it thrives in the cooler, mountainous regions. The plant has adapted to the unique climate conditions of Hawaii’s higher elevations, particularly around areas like Kokee (hence the common name!).

Important Conservation Note

Before you fall head over heels for this plant, here’s something crucial to know: Kokee starviolet has a Global Conservation Status of S3, meaning it’s considered vulnerable. With only 21 to 100 known occurrences and an estimated 3,000 to 10,000 individuals in the wild, this species faces real conservation challenges.

If you’re interested in growing Kokee starviolet, please only source it from reputable native plant nurseries that use responsibly collected seeds or ethically propagated material. Never collect plants from the wild – this could further threaten already vulnerable populations.

Growing Conditions and Care

Let’s be honest – Kokee starviolet isn’t your typical beginner plant. This Hawaiian native has very specific needs that mirror its natural mountain habitat:

  • Thrives in USDA zones 10-11 (tropical and subtropical climates)
  • Prefers cool, moist conditions similar to Hawaiian mountain environments
  • Needs well-draining soil to prevent root problems
  • May struggle in hot, dry, or overly humid conditions

Success with this plant often depends on your ability to recreate the cool, misty conditions of its native Kokee habitat. If you live outside Hawaii, consider this a challenging specialty plant that may require greenhouse conditions or very specific microclimates.

Garden Design and Landscape Role

Kokee starviolet shines brightest in:

  • Native Hawaiian plant collections
  • Conservation gardens focused on rare species
  • Specialty gardens for plant enthusiasts
  • Educational landscapes highlighting Hawaiian biodiversity

While we don’t have specific data on its wildlife benefits, most native Hawaiian plants support local ecosystems in important ways, likely providing nectar for native pollinators and habitat for indigenous species.

Should You Grow Kokee Starviolet?

Here’s the thing – growing Kokee starviolet is as much about conservation as it is about gardening. If you have the right conditions, the patience for a challenging plant, and access to ethically sourced material, this rare beauty can be a meaningful addition to your garden. You’ll be participating in conservation efforts while enjoying a truly unique Hawaiian native.

However, if you’re new to native Hawaiian plants or don’t have the specific climate conditions this species needs, you might want to start with hardier Hawaiian natives and work your way up to rare species like Kokee starviolet.

Remember, every plant matters when you’re dealing with vulnerable species. Growing Kokee starviolet responsibly means you’re not just adding beauty to your garden – you’re helping preserve a piece of Hawaii’s natural heritage for future generations.

Kokee Starviolet

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

Rubiales

Family

Rubiaceae Juss. - Madder family

Genus

Hedyotis L. - starviolet

Species

Hedyotis knudsenii (Hillebr.) Fosberg - kokee starviolet

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