North America Native Plant

Fosberg’s Starviolet

Botanical name: Hedyotis fosbergii

USDA symbol: HEFO5

Life cycle: perennial

Habit: shrub

Native status: Native to Hawaii  

Synonyms: Gouldia st.-johnii Fosberg (GOST2)  âš˜  Gouldia st.-johnii Fosberg var. munroi (GOSTM)  âš˜  Kadua fosbergii (W.L. Wagner & D.R. Herbst) W.L. Wagner & Lorence (KAFO3)   

Fosberg’s Starviolet: A Rare Hawaiian Gem Worth Protecting Meet Fosberg’s starviolet (Hedyotis fosbergii), a charming little shrub that’s as rare as it is special. This Hawaiian endemic belongs to the coffee family and represents one of the islands’ precious botanical treasures that most gardeners will never encounter in typical nurseries. ...

Rare plant alert!

Region: Conservation status by state

Status: S2S3: Status is uncertain but is somewhere between the following rankings: Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘ 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 ⚘

Fosberg’s Starviolet: A Rare Hawaiian Gem Worth Protecting

Meet Fosberg’s starviolet (Hedyotis fosbergii), a charming little shrub that’s as rare as it is special. This Hawaiian endemic belongs to the coffee family and represents one of the islands’ precious botanical treasures that most gardeners will never encounter in typical nurseries.

What Makes Fosberg’s Starviolet Special

This perennial shrub is a true Hawaiian native, found exclusively in the Hawaiian Islands. Like many shrubs, it typically grows as a multi-stemmed woody plant, usually staying under 13-16 feet tall with several stems arising from near the ground. What sets this plant apart isn’t just its island origins, but its incredible rarity in the wild.

Where You’ll Find It (Or Won’t)

Fosberg’s starviolet calls only Hawaii home, making it one of those special plants that evolved in isolation on these Pacific islands. Its distribution is limited to specific Hawaiian habitats, which contributes to its conservation concerns.

A Word of Caution: Rarity Alert

Here’s where things get serious, fellow plant lovers. Fosberg’s starviolet has a Global Conservation Status of S2S3, which means it’s considered rare to uncommon in the wild. This isn’t your average garden center find, and for good reason – this plant needs our protection, not our picking.

If you’re absolutely committed to growing this species, please ensure any plant material comes from responsible, authorized sources that support conservation efforts rather than wild collection. Better yet, consider supporting Hawaiian botanical gardens and conservation organizations that work to protect these irreplaceable species.

Growing Conditions and Habitat Needs

Fosberg’s starviolet has a facultative wetland status in Hawaii, meaning it’s flexible enough to grow in both wetland and non-wetland conditions. This adaptability might seem encouraging for cultivation, but remember that native Hawaiian plants often have very specific soil, climate, and ecosystem requirements that can be challenging to replicate in typical garden settings.

Without detailed cultivation information readily available (which is common for rare native species), growing this plant successfully would require:

  • Deep knowledge of Hawaiian native plant cultivation
  • Appropriate climate conditions similar to its native range
  • Specialized soil and moisture requirements
  • Patience and expertise in working with rare species

Better Alternatives for Your Garden

Instead of pursuing this rare beauty, why not explore other Hawaiian natives that are more readily available and better suited to cultivation? Many Hawaiian native plants offer similar charm without the conservation concerns. Consider working with local Hawaiian native plant societies or botanical gardens to find appropriate alternatives that won’t impact wild populations.

Supporting Conservation Instead

The best way to appreciate Fosberg’s starviolet is to support the organizations working to protect it in its natural habitat. Hawaiian botanical gardens, native plant societies, and conservation groups are doing incredible work to preserve these irreplaceable species for future generations.

Remember, sometimes the most loving thing we can do for a plant is to admire it from afar and ensure its wild populations remain undisturbed. Fosberg’s starviolet serves as a beautiful reminder of Hawaii’s unique botanical heritage – let’s help keep it that way.

Fosberg’s 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 fosbergii W.L. Wagner & D.R. Herbst - Fosberg's starviolet

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