North America Native Plant

Island Schiedea

Botanical name: Schiedea hawaiiensis

USDA symbol: SCHA5

Life cycle: perennial

Habit: vine

Native status: Native to Hawaii  

Island Schiedea: Hawaii’s Critically Endangered Native Treasure When it comes to Hawaiian native plants, few species capture the urgency of conservation quite like the island schiedea (Schiedea hawaiiensis). This delicate perennial herb represents both the unique beauty of Hawaii’s endemic flora and the critical challenges facing the islands’ native ecosystems. ...

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

Island Schiedea: Hawaii’s Critically Endangered Native Treasure

When it comes to Hawaiian native plants, few species capture the urgency of conservation quite like the island schiedea (Schiedea hawaiiensis). This delicate perennial herb represents both the unique beauty of Hawaii’s endemic flora and the critical challenges facing the islands’ native ecosystems.

What Makes Island Schiedea Special?

Island schiedea is a small herbaceous plant that belongs to the carnation family. As a forb herb, it lacks woody stems and instead produces soft, green growth that emerges from ground-level buds each growing season. This perennial creates delicate clusters of tiny white flowers that add a subtle charm to its native rocky habitats.

Where Does Island Schiedea Grow?

This remarkable plant is endemic to Hawaii, meaning it exists nowhere else on Earth. Island schiedea has adapted to thrive in the unique conditions found on Hawaiian cliffs and rocky outcroppings, where few other plants can survive.

A Plant in Crisis: Understanding Its Endangered Status

Important Conservation Alert: Island schiedea is federally listed as Endangered and carries a Global Conservation Status of S1, meaning it’s critically imperiled. With typically five or fewer known populations and fewer than 1,000 individuals remaining in the wild, this species teeters on the brink of extinction.

This critical status means that island schiedea is absolutely not suitable for home gardening, even for the most dedicated native plant enthusiasts.

Why You Shouldn’t (and Can’t) Grow Island Schiedea

Here’s why this beautiful native isn’t destined for your garden:

  • Legal protection: As a federally endangered species, collecting or disturbing wild populations is prohibited
  • Extreme rarity: Seeds and plants are not commercially available
  • Specialized habitat needs: Requires very specific rocky cliff conditions that are nearly impossible to replicate
  • Conservation priority: All efforts focus on protecting existing wild populations

Supporting Island Schiedea Conservation

While you can’t grow island schiedea in your garden, you can still support its survival:

  • Donate to Hawaiian native plant conservation organizations
  • Support habitat protection efforts in Hawaii
  • Choose other Hawaiian native plants for your garden that aren’t endangered
  • Spread awareness about Hawaii’s unique and threatened flora

Hawaiian Native Alternatives for Your Garden

If you’re inspired by Hawaii’s native flora, consider these more garden-appropriate alternatives:

  • Native Hawaiian hibiscus species (where climate permits)
  • Hawaiian native ferns for shaded areas
  • Indigenous grasses suitable for your region
  • Other non-endangered Hawaiian natives available through specialty nurseries

The Bigger Picture

Island schiedea serves as a powerful reminder of how precious and fragile our native ecosystems can be. While we can’t invite this particular species into our gardens, we can honor its existence by becoming better stewards of the native plants in our own regions and supporting conservation efforts wherever possible.

Sometimes the most meaningful way to appreciate a plant is to ensure it continues to thrive in its natural habitat, even if that means admiring it from afar.

Island 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 hawaiiensis Hillebr. - island schiedea

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