North America Native Plant

Kopa

Botanical name: Hedyotis schlechtendahliana schlechtendahliana

USDA symbol: HESCS4

Life cycle: perennial

Habit: subshrub

Native status: Native to Hawaii  

Synonyms: Hedyotis angusta Fosberg (HEAN10)  âš˜  Hedyotis angusta Fosberg var. koolauensis (HEANK)  âš˜  Hedyotis angusta Fosberg var. umbrosa (HEANU)  âš˜  Hedyotis glaucifolia (A. Gray) Fosberg var. helleri Fosberg (HEGLH)  âš˜  Hedyotis remyi (Hillebr.) Fosberg var. nuttallii (Fosberg) Fosberg (HEREN)  âš˜  Hedyotis remyi (Hillebr.) Fosberg var. plana (Fosberg) Fosberg (HEREP)  âš˜  Hedyotis remyi (Hillebr.) Fosberg var. silvicola Fosberg (HERES2)  âš˜  Hedyotis schlechtendahliana Steud. var. glauca (Meyen) Fosberg (HESCG)  âš˜  Hedyotis schlechtendahliana Steud. var. nitens (Wawra) Fosberg (HESCN2)  âš˜  Hedyotis schlechtendahliana Steud. var. nuttallii Fosberg (HESCN3)  âš˜  Hedyotis schlechtendahliana Steud. var. opaca (Wawra) Fosberg (HESCO2)  âš˜  Hedyotis schlechtendahliana Steud. var. plana Fosberg (HESCP)  âš˜  Hedyotis schlechtendahliana Steud. ssp. rockii Fosberg (HESCR)  âš˜  Hedyotis schlechtendahliana Steud. var. reticulata Fosberg (HESCR4)  âš˜  Hedyotis schlechtendahliana Steud. var. secundiflora (Hillebr.) Fosberg (HESCS)  âš˜  Hedyotis schlechtendahliana Steud. var. schlechtendahliana (HESCS2)  âš˜  Hedyotis schlechtendahliana Steud. ssp. tenuifolia Fosberg (HESCT)   

Kopa: A Rare Hawaiian Native Worth Protecting If you’re passionate about Hawaiian native plants, you might have heard whispers about kopa (Hedyotis schlechtendahliana schlechtendahliana) – a shrubby treasure that’s become increasingly rare in its island home. This unassuming perennial represents both the beauty and fragility of Hawaii’s unique native flora. ...

Rare plant alert!

Region: Conservation status by state

Status: S3T3: 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 ⚘ Subspecies or variety is 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. ⚘

Kopa: A Rare Hawaiian Native Worth Protecting

If you’re passionate about Hawaiian native plants, you might have heard whispers about kopa (Hedyotis schlechtendahliana schlechtendahliana) – a shrubby treasure that’s become increasingly rare in its island home. This unassuming perennial represents both the beauty and fragility of Hawaii’s unique native flora.

What Makes Kopa Special?

Kopa belongs to the coffee family (Rubiaceae) and is a true Hawaiian endemic, meaning it exists nowhere else on Earth. This multi-stemmed woody shrub typically grows less than 13-16 feet tall, though it can vary based on environmental conditions. Like many Hawaiian natives, kopa has adapted specifically to the islands’ unique climate and ecosystems over thousands of years.

Where Does Kopa Grow?

This rare native is found exclusively in Hawaii, where it has carved out its niche in the island’s diverse landscapes. However, its populations have become increasingly limited over time.

A Plant in Need of Protection

Here’s where things get serious: kopa carries a Global Conservation Status of S3T3, indicating it’s vulnerable and of conservation concern. This isn’t just another pretty plant you can casually add to your garden – it’s a species that needs our help to survive.

What does this mean for gardeners? If you’re considering growing kopa, you’ll need to be extra thoughtful about it. This isn’t a plant you should collect from the wild (please don’t!), and finding responsibly sourced material can be challenging.

Growing Kopa: A Conservation-Minded Approach

Given Hawaii’s year-round growing season, kopa thrives in USDA hardiness zones 10-11. As a Hawaiian native, it’s naturally adapted to the islands’ tropical climate with its warm temperatures and distinct wet and dry seasons.

If you’re determined to grow kopa, here are some guidelines:

  • Only source plants from reputable native plant nurseries or conservation programs
  • Never collect from wild populations
  • Consider participating in conservation efforts or habitat restoration projects instead
  • Provide growing conditions that mimic its natural Hawaiian forest habitat

Why Choose Kopa for Your Garden?

Honestly? For most gardeners, kopa might not be the best choice. Its rarity means it’s difficult to obtain ethically, and there’s limited information about its specific care requirements. However, if you’re involved in conservation work or habitat restoration, kopa could play an important role in preserving Hawaii’s native plant heritage.

The real appeal of kopa lies not in its garden potential, but in what it represents – a unique piece of Hawaii’s evolutionary story that deserves protection and respect.

Better Alternatives for Most Gardeners

If you’re looking to support Hawaiian native plants in your landscape, consider more readily available species that won’t put additional pressure on rare populations. Many other native Hawaiian plants offer similar ecological benefits while being more accessible through ethical channels.

The Bottom Line on Kopa

Kopa is a fascinating piece of Hawaii’s natural heritage, but it’s also a reminder that not every plant is meant for our gardens. Sometimes the best way to appreciate a rare native is to support its conservation in the wild rather than trying to grow it at home. If you do encounter kopa in nature, take a moment to appreciate this rare shrub – and maybe snap a photo instead of taking a cutting.

For most gardeners, the best way to honor kopa is to choose other Hawaiian natives that are more readily available and to support conservation efforts that protect rare species like this one in their natural habitats.

Kopa

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 schlechtendahliana Steud. - kopa

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