North America Native Plant

Kalalau Schiedea

Botanical name: Schiedea attenuata

USDA symbol: SCAT7

Life cycle: perennial

Habit: forb

Native status: Native to Hawaii  

Kalalau Schiedea: A Precious Hawaiian Endemic in Critical Need of Protection Meet the Kalalau schiedea (Schiedea attenuata), one of Hawaii’s most endangered native plants. This delicate perennial forb represents both the incredible biodiversity of the Hawaiian Islands and the urgent conservation challenges facing many native species today. Where Does Kalalau ...

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

Kalalau Schiedea: A Precious Hawaiian Endemic in Critical Need of Protection

Meet the Kalalau schiedea (Schiedea attenuata), one of Hawaii’s most endangered native plants. This delicate perennial forb represents both the incredible biodiversity of the Hawaiian Islands and the urgent conservation challenges facing many native species today.

Where Does Kalalau Schiedea Come From?

This remarkable plant is endemic to Hawaii, meaning it exists nowhere else on Earth. Specifically, Kalalau schiedea calls the remote and rugged Kalalau Valley on the island of Kauai its home. This dramatic location, with its towering cliffs and isolated terrain, has been both a sanctuary and a limitation for this rare species.

What Makes This Plant Special?

Kalalau schiedea is a herbaceous perennial forb, which means it’s a non-woody plant that comes back year after year. Like other forbs, it lacks the thick, woody stems you’d find on shrubs or trees, instead producing softer tissue that dies back and regenerates from buds at or below ground level.

The plant produces small, delicate flowers and has slender, narrow leaves that help it survive in its challenging cliff-side habitat. While it may not be the showiest plant in terms of size or color, its rarity and ecological significance make it truly extraordinary.

A Plant in Crisis: Understanding Its Endangered Status

Here’s where things get serious: Kalalau schiedea has a Global Conservation Status of S1, which translates to Critically Imperiled. This designation means the species faces an extremely high risk of extinction, typically having five or fewer known populations and fewer than 1,000 individual plants remaining in the wild. It’s also officially listed as Endangered under federal protection.

This critical status puts Kalalau schiedea in the company of some of the world’s most threatened species. Every individual plant matters when you’re dealing with numbers this small.

Can You Grow Kalalau Schiedea in Your Garden?

The short answer is no – and here’s why you shouldn’t try:

  • With so few plants left in existence, any collection from the wild could push the species closer to extinction
  • The plant has evolved for very specific conditions found only in remote Hawaiian cliff environments
  • It’s protected by law, making unauthorized collection illegal
  • Even well-meaning cultivation attempts could inadvertently harm conservation efforts

How You Can Help Instead

While you can’t grow Kalalau schiedea in your backyard, you can still make a difference:

  • Support conservation organizations working to protect Hawaiian native plants
  • Choose other native Hawaiian plants for your garden if you live in suitable zones (10-11)
  • Spread awareness about the importance of protecting endangered species
  • Practice responsible tourism if visiting Hawaii – stick to designated trails and never collect plants

Better Alternatives for Your Native Garden

If you’re inspired by Hawaiian native plants but live in suitable growing zones, consider these less threatened alternatives that can be responsibly sourced:

  • Other native Hawaiian plants available through legitimate nurseries
  • Native plants from your own region that support local ecosystems
  • Plants that provide similar ecological functions without conservation concerns

The Bigger Picture

Kalalau schiedea serves as a powerful reminder of what we stand to lose when habitats are destroyed and species are pushed to the brink. While this particular plant isn’t suitable for home cultivation, learning about it helps us appreciate the incredible diversity of plant life and the importance of conservation efforts.

Every time we choose native plants for our gardens, support conservation efforts, or simply learn about endangered species like the Kalalau schiedea, we’re contributing to a larger movement to protect biodiversity for future generations.

Sometimes the most beautiful way to honor a plant is to leave it wild and work to ensure its survival in its natural habitat.

Kalalau Schiedea

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Caryophyllidae

Order

Caryophyllales

Family

Caryophyllaceae Juss. - Pink family

Genus

Schiedea Cham. & Schltdl. - schiedea

Species

Schiedea attenuata W.L. Wagner, S.G. Weller & A.K. Sakai - Kalalau schiedea

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