North America Native Plant

Kopa

Botanical name: Hedyotis schlechtendahliana remyi

USDA symbol: HESCR7

Life cycle: perennial

Habit: subshrub

Native status: Native to Hawaii  

Synonyms: Hedyotis remyi (Hillebr.) Fosberg (HERE4)  âš˜  Hedyotis schlechtendahliana Steud. var. remyi (Hillebr.) Fosberg (HESCR3)   

Kopa: A Rare Native Hawaiian Shrub Worth Protecting in Your Garden Meet kopa (Hedyotis schlechtendahliana remyi), a charming native Hawaiian shrub that’s both beautiful and botanically significant. This little-known gem deserves a spot in native plant enthusiasts’ hearts – and gardens – but with an important caveat about responsible sourcing. ...

Rare plant alert!

Region: Conservation status by state

Status: S3T1: Status is uncertain but is somewhere between the following rankings: 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) ⚘ 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 Native Hawaiian Shrub Worth Protecting in Your Garden

Meet kopa (Hedyotis schlechtendahliana remyi), a charming native Hawaiian shrub that’s both beautiful and botanically significant. This little-known gem deserves a spot in native plant enthusiasts’ hearts – and gardens – but with an important caveat about responsible sourcing.

What Makes Kopa Special?

Kopa is a perennial shrub that’s completely endemic to Hawaii, meaning it grows naturally nowhere else on Earth. This multi-stemmed woody plant typically stays under 13-16 feet tall, making it perfect for understory plantings and smaller garden spaces. Its delicate white flowers and compact form give it a subtle elegance that complements other native Hawaiian plants beautifully.

You might also see this plant listed under its botanical synonyms: Hedyotis remyi or Hedyotis schlechtendahliana var. remyi. Don’t let the scientific names intimidate you – it’s still the same lovely kopa!

Where Does Kopa Grow?

This Hawaiian endemic is found exclusively in the Hawaiian Islands, where it naturally occurs in dry to mesic (moderately moist) forest environments. It’s adapted to the unique climate and growing conditions found only in this Pacific paradise.

Important Conservation Note

Here’s something crucial every gardener should know: kopa has a Global Conservation Status of S3T1, indicating it’s quite rare in the wild. While this makes it an incredibly special addition to any native plant collection, it also means we need to be extra responsible about how we source and grow it. Always purchase kopa from reputable native plant nurseries that propagate from ethically collected seeds or cuttings – never collect from wild populations.

Why Grow Kopa in Your Garden?

If you’re lucky enough to garden in USDA hardiness zones 10-11 (basically Hawaii and similar tropical climates), kopa offers several wonderful benefits:

  • Supports native Hawaiian ecosystems and biodiversity
  • Attracts native Hawaiian pollinators with its small white flowers
  • Requires minimal water once established, making it drought-tolerant
  • Perfect for native plant gardens and restoration landscapes
  • Low-maintenance shrub ideal for busy gardeners

How to Grow Kopa Successfully

Growing kopa isn’t particularly challenging once you understand its preferences. This adaptable shrub thrives in conditions similar to its natural Hawaiian forest habitat.

Ideal Growing Conditions

Kopa prefers well-draining soils and can handle everything from partial shade to full sun exposure. Once established, it’s remarkably drought-tolerant – a trait that makes it perfect for water-wise gardening approaches.

Planting and Care Tips

  • Plant in well-draining soil to prevent root rot
  • Water regularly during establishment, then reduce frequency
  • Add organic mulch around the base to retain moisture and suppress weeds
  • Prune lightly if needed to maintain shape, but kopa naturally grows in an attractive form
  • Fertilize sparingly – native plants typically don’t need heavy feeding

Perfect Garden Companions

Kopa works beautifully in native Hawaiian plant gardens alongside other indigenous species. Consider pairing it with native ferns, other Hawaiian shrubs, and endemic groundcovers to create an authentic island ecosystem in your landscape.

The Bottom Line

Kopa represents something special – a direct connection to Hawaii’s unique natural heritage. While its rarity means we must be thoughtful about sourcing, responsible gardeners who choose ethically propagated plants can enjoy this beautiful shrub while contributing to its conservation. If you’re gardening in tropical zones and want to support native biodiversity, kopa deserves serious consideration for your landscape.

Remember: always source from reputable native plant nurseries, never from wild populations. By growing kopa responsibly, you’re not just adding beauty to your garden – you’re helping preserve a piece of Hawaii’s irreplaceable natural legacy.

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