North America Native Plant

Forest Dubautia

Botanical name: Dubautia knudsenii nagatae

USDA symbol: DUKNN

Life cycle: perennial

Habit: shrub

Native status: Native to Hawaii  

Synonyms: Dubautia nagatae H. St. John (DUNA)   

Forest Dubautia: A Rare Hawaiian Native Worth Protecting Meet the forest dubautia (Dubautia knudsenii nagatae), a remarkable native Hawaiian shrub that’s as rare as it is special. This perennial beauty belongs to Hawaii’s unique flora, but before you start planning where to plant it, there’s something important you need to ...

Rare plant alert!

Region: Conservation status by state

Status: S2T2: 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) ⚘ Subspecies or variety is 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) ⚘

Forest Dubautia: A Rare Hawaiian Native Worth Protecting

Meet the forest dubautia (Dubautia knudsenii nagatae), a remarkable native Hawaiian shrub that’s as rare as it is special. This perennial beauty belongs to Hawaii’s unique flora, but before you start planning where to plant it, there’s something important you need to know about its conservation status.

A True Hawaiian Native

Forest dubautia is exclusively native to Hawaii, making it a genuine piece of the islands’ natural heritage. As a member of the sunflower family, this shrub has evolved specifically to thrive in Hawaiian ecosystems over thousands of years. You might also see it listed under its scientific synonym, Dubautia nagatae H. St. John, in older botanical references.

This species grows naturally throughout the Hawaiian Islands, where it plays an important role in native plant communities.

What Makes Forest Dubautia Special

As a perennial shrub, forest dubautia develops multiple woody stems that typically reach heights of 13-16 feet, though it can vary depending on growing conditions. Like most shrubs, it usually has several stems arising from near the ground, creating a naturally full, bushy appearance.

Important Conservation Considerations

Here’s the crucial part: Forest dubautia has a Global Conservation Status of S2T2, which indicates this plant is rare and potentially vulnerable. This means that while we absolutely want to encourage growing native Hawaiian plants, this particular species should only be planted using responsibly sourced material.

What does this mean for you as a gardener?

  • Never collect plants or seeds from wild populations
  • Only purchase from reputable native plant nurseries that propagate their own stock
  • Consider this plant for conservation-focused gardens rather than casual landscaping
  • Support local conservation efforts that protect wild populations

Growing Forest Dubautia: The Challenge

Here’s where things get tricky – because forest dubautia is so rare, there’s limited information available about its specific growing requirements and care needs. Unlike more common native plants that have been extensively studied and cultivated, this species remains somewhat of a mystery in garden settings.

If you’re determined to grow forest dubautia, you’ll likely need to:

  • Work directly with Hawaiian native plant specialists
  • Be prepared for some trial and error with growing conditions
  • Connect with local botanical gardens or conservation organizations for guidance

Alternative Native Hawaiian Plants

While we’d love to give you detailed growing instructions for forest dubautia, its rarity means it might not be the best choice for most home gardeners. Instead, consider these more readily available native Hawaiian alternatives that can give you similar ecological benefits:

  • Other Dubautia species that are more common
  • Native Hawaiian shrubs with similar growth habits
  • Plants that support the same wildlife and pollinators

Supporting Hawaiian Native Plants

Whether or not you end up growing forest dubautia specifically, you can still support Hawaiian native plant conservation by:

  • Choosing other native Hawaiian species for your landscape
  • Supporting organizations that protect native plant habitats
  • Learning about and sharing information about Hawaiian native plants
  • Visiting botanical gardens that specialize in Hawaiian flora

Forest dubautia may be rare and challenging to grow, but it represents something incredibly valuable – a unique piece of Hawaii’s natural heritage that deserves our protection and respect. Sometimes the best way to appreciate a rare plant is to support its conservation while choosing more suitable natives for our gardens.

Forest Dubautia

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

Asterales

Family

Asteraceae Bercht. & J. Presl - Aster family

Genus

Dubautia Gaudich. - dubautia

Species

Dubautia knudsenii Hillebr. - forest dubautia

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