North America Native Plant

Molokai Beggarticks

Botanical name: Bidens molokaiensis

USDA symbol: BIMO

Life cycle: perennial

Habit: forb

Native status: Native to Hawaii  

Molokai Beggarticks: A Critically Endangered Hawaiian Native Worth Protecting Meet one of Hawaii’s most endangered botanical treasures: Molokai beggarticks (Bidens molokaiensis). This remarkable perennial plant represents both the incredible diversity of Hawaiian flora and the urgent need for conservation efforts in our island ecosystems. A Rare Hawaiian Endemic Molokai beggarticks ...

Rare plant alert!

Region: Conservation status by state

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) ⚘

Molokai Beggarticks: A Critically Endangered Hawaiian Native Worth Protecting

Meet one of Hawaii’s most endangered botanical treasures: Molokai beggarticks (Bidens molokaiensis). This remarkable perennial plant represents both the incredible diversity of Hawaiian flora and the urgent need for conservation efforts in our island ecosystems.

A Rare Hawaiian Endemic

Molokai beggarticks is exclusively native to the island of Molokai in Hawaii, making it what botanists call an endemic species. This means you won’t find this plant growing naturally anywhere else on Earth. Unfortunately, its rarity has earned it a Global Conservation Status of S1, which translates to Critically Imperiled – meaning there are typically only five or fewer known locations where this species still survives in the wild, with fewer than 1,000 individual plants remaining.

What Makes This Plant Special

Like other members of the Bidens family, Molokai beggarticks produces cheerful yellow, daisy-like flowers that add a bright splash of color to the Hawaiian landscape. As a perennial, this plant returns year after year, forming part of the native ecosystem’s foundation when conditions allow it to thrive.

The flowers aren’t just pretty to look at – they serve as important nectar sources for native Hawaiian pollinators and beneficial insects, playing a crucial role in maintaining the delicate balance of island ecosystems.

Should You Grow Molokai Beggarticks?

Here’s where things get serious, fellow plant lovers. While we absolutely want to encourage growing native Hawaiian plants, Molokai beggarticks requires a very special approach due to its critically endangered status.

If you’re passionate about conservation: This plant deserves a place in native Hawaiian gardens and conservation collections, but only when sourced through responsible channels. Any seeds or plants should come from established conservation programs or botanical institutions working to preserve this species.

Important considerations:

  • Never collect seeds or plants from wild populations
  • Work with Hawaiian native plant societies or botanical gardens
  • Ensure you can provide the specialized care this rare species needs
  • Consider this plant part of a broader conservation effort rather than just a garden addition

Growing Conditions and Care

Molokai beggarticks thrives in Hawaii’s tropical climate, which corresponds to USDA hardiness zones 10-11. If you’re fortunate enough to obtain responsibly sourced plants, here’s what they need:

Light: Partial to full sun exposure

Soil: Well-draining soil that doesn’t stay waterlogged

Climate: Warm, tropical conditions year-round

Given its endangered status, growing Molokai beggarticks successfully often requires consultation with conservation experts who understand the specific needs of this rare species.

Supporting Conservation Efforts

Even if you can’t grow Molokai beggarticks in your own garden, you can still support this endangered species:

  • Donate to Hawaiian native plant conservation organizations
  • Volunteer with local botanical gardens or native plant societies
  • Choose other native Hawaiian plants for your landscape
  • Spread awareness about the importance of protecting endemic species

The Bigger Picture

Molokai beggarticks represents something larger than just one rare plant – it’s a symbol of Hawaii’s unique natural heritage and the urgent need to protect what remains of our native ecosystems. Every endemic species we lose is gone forever, taking with it thousands of years of evolutionary adaptation to Hawaii’s specific conditions.

While this beautiful perennial may not be suitable for every garden due to its conservation status, learning about and supporting efforts to protect Molokai beggarticks connects us to the broader mission of preserving biodiversity for future generations.

If you’re interested in adding native Hawaiian plants to your landscape, consider working with local conservation groups to identify appropriate alternatives that can provide similar ecological benefits without putting additional pressure on critically endangered species.

Molokai Beggarticks

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

Bidens L. - beggarticks

Species

Bidens molokaiensis (Hillebr.) Sherff - Molokai beggarticks

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