North America Native Plant

Wahiawa Stream Violet

Botanical name: Viola helenae

USDA symbol: VIHE2

Life cycle: perennial

Habit: subshrub

Native status: Native to Hawaii  

Wahiawa Stream Violet: Hawaii’s Critically Endangered Native Treasure Meet the Wahiawa stream violet (Viola helenae), one of Hawaii’s most precious and precarious native plants. This little-known perennial herb holds the distinction of being one of the rarest violets in the world, making it a plant that deserves our attention—and our ...

Rare plant alert!

Region: United States

Status: S1: Status is uncertain but is somewhere between the following rankings: 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) ⚘ Endangered: In danger of extinction throughout all or a significant portion of its range. ⚘

Region: United States

Wahiawa Stream Violet: Hawaii’s Critically Endangered Native Treasure

Meet the Wahiawa stream violet (Viola helenae), one of Hawaii’s most precious and precarious native plants. This little-known perennial herb holds the distinction of being one of the rarest violets in the world, making it a plant that deserves our attention—and our protection.

A Plant on the Edge of Extinction

The Wahiawa stream violet carries a sobering conservation status: it’s classified as S1 (Critically Imperiled) globally and listed as Endangered. With typically five or fewer occurrences and very few remaining individuals (fewer than 1,000), this native Hawaiian violet is teetering on the brink of extinction. Every single plant matters when numbers are this low.

Where in the World?

This endemic beauty calls only Hawaii home, making it a true island treasure found nowhere else on Earth. Its extremely limited distribution adds to both its uniqueness and its vulnerability.

Getting to Know This Rare Violet

Viola helenae is what botanists call a forb—essentially a soft-stemmed perennial herb without the woody tissue you’d find in shrubs or trees. As a facultative wetland plant, it usually prefers wet conditions but can occasionally tolerate drier spots. This adaptability might seem like an advantage, but it hasn’t been enough to secure stable populations in the wild.

Should You Grow Wahiawa Stream Violet?

Here’s where we need to have a serious conversation. While the idea of growing this rare native might seem appealing to conservation-minded gardeners, the reality is much more complex:

  • Extreme rarity means extreme caution: With so few plants left in the wild, any cultivation should only be attempted with properly sourced, legally obtained material
  • Specialized needs: This plant has evolved for very specific Hawaiian conditions that are difficult to replicate
  • Conservation priority: Efforts are better focused on habitat protection and professional conservation programs

Supporting Conservation Instead

Rather than attempting to grow Wahiawa stream violet, consider these alternatives that support Hawaiian native plant conservation:

  • Plant other native Hawaiian violets that are more stable and available through reputable native plant nurseries
  • Support organizations working on Hawaiian plant conservation
  • Choose locally appropriate native plants for your specific location
  • Advocate for habitat protection in Hawaii

The Bigger Picture

The story of Viola helenae serves as a powerful reminder of what we stand to lose when native habitats disappear. This critically endangered violet represents not just one species, but an entire ecosystem’s health and the irreplaceable evolutionary history of Hawaii’s unique flora.

While we may not be able to casually grow this rare beauty in our gardens, we can honor its existence by supporting conservation efforts and making thoughtful choices about the native plants we do cultivate. Every garden planted with appropriate native species helps create a network of habitat that supports biodiversity—and that’s something the Wahiawa stream violet’s ecosystem desperately needs.

Sometimes the best way to love a plant is to protect it in the wild rather than bring it into our gardens. The Wahiawa stream violet deserves our respect, our protection, and our commitment to preserving the precious places it calls home.

Wahiawa Stream Violet

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Dilleniidae

Order

Violales

Family

Violaceae Batsch - Violet family

Genus

Viola L. - violet

Species

Viola helenae Forbes & Lydgate - Wahiawa stream violet

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