North America Native Plant

Grassland Beggarticks

Botanical name: Bidens micrantha

USDA symbol: BIMI2

Life cycle: perennial

Habit: subshrub

Native status: Native to Hawaii  

Grassland Beggarticks: A Rare Hawaiian Native Worth Protecting in Your Garden If you’re passionate about native Hawaiian plants and conservation gardening, grassland beggarticks (Bidens micrantha) deserves a spot on your radar. This charming little shrub might not be the showiest plant in the islands, but it packs a big punch ...

Rare plant alert!

Region: Conservation status by state

Status: S3: Status is uncertain but is somewhere between the following rankings: Vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals ⚘

Grassland Beggarticks: A Rare Hawaiian Native Worth Protecting in Your Garden

If you’re passionate about native Hawaiian plants and conservation gardening, grassland beggarticks (Bidens micrantha) deserves a spot on your radar. This charming little shrub might not be the showiest plant in the islands, but it packs a big punch when it comes to supporting local ecosystems and preserving Hawaii’s botanical heritage.

What Makes Grassland Beggarticks Special?

Grassland beggarticks is a perennial shrub that stays refreshingly compact, typically growing under 1.5 feet tall and never exceeding 3 feet at maturity. This low-growing habit makes it perfect for gardeners who want native plants that won’t overwhelm smaller spaces or compete with taller specimens.

As its name suggests, this species is native to Hawaii’s grassland habitats, where it has adapted to thrive in the islands’ unique climate and soil conditions. Unlike some of its weedy beggarticks cousins, this native variety plays an important role in Hawaii’s natural plant communities.

Where Does It Grow?

Grassland beggarticks is endemic to the Hawaiian Islands, meaning you won’t find it growing naturally anywhere else on Earth. Within Hawaii, it inhabits grassland and shrubland areas where it has evolved alongside other native species over thousands of years.

A Plant That Needs Our Help

Here’s something important to know: grassland beggarticks has a Global Conservation Status of S3, which means it’s considered vulnerable. With typically only 21 to 100 occurrences and between 3,000 to 10,000 individuals remaining, this little shrub is at risk of disappearing from the wild.

This makes grassland beggarticks an excellent choice for conservation-minded gardeners who want to help preserve Hawaii’s native flora. However, it’s crucial to source plants responsibly from reputable native plant nurseries rather than collecting from wild populations.

Garden Appeal and Landscape Use

While grassland beggarticks may not have the flashy tropical blooms that many associate with Hawaiian gardens, it offers subtle beauty through its small yellow composite flowers and neat, compact form. The flowers attract native Hawaiian insects and some introduced pollinators, making it a valuable addition to pollinator gardens.

This plant works wonderfully as:

  • Ground cover in native Hawaiian gardens
  • An accent plant in xeric or drought-tolerant landscapes
  • Part of naturalistic plantings that mimic Hawaii’s grassland habitats
  • A conservation plant for those supporting native species recovery

Growing Grassland Beggarticks Successfully

The good news is that grassland beggarticks is relatively easy to grow once you understand its needs. As a plant adapted to Hawaii’s grasslands, it prefers well-draining soils and can handle full sun to partial shade conditions.

This species is suitable for USDA hardiness zones 10-11, making it perfect for tropical and subtropical climates. Once established, it’s quite drought-tolerant, reflecting its adaptation to Hawaii’s variable rainfall patterns.

Planting and Care Tips

When planting grassland beggarticks, choose a location with good drainage – soggy soils are not its friend. Here are some key care guidelines:

  • Plant in well-draining soil to prevent root rot
  • Provide regular water during establishment, then reduce frequency
  • Allow soil to dry between waterings once established
  • Prune occasionally to maintain compact shape and encourage bushier growth
  • Mulch lightly to conserve moisture and suppress weeds

Supporting Conservation Through Gardening

By choosing to grow grassland beggarticks in your garden, you’re doing more than just adding an interesting native plant – you’re participating in conservation. Every garden that includes this vulnerable species helps ensure its survival and provides habitat for the native insects and other wildlife that depend on it.

Remember, always purchase grassland beggarticks from reputable sources that propagate plants rather than wild-collecting them. This helps protect wild populations while still allowing you to enjoy this special Hawaiian native in your own landscape.

Grassland beggarticks may be small and understated, but it represents something much larger: Hawaii’s incredible botanical diversity and our responsibility to protect it. For gardeners who want to make a difference while creating beautiful, sustainable landscapes, this little shrub is definitely worth considering.

Grassland 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 micrantha Gaudich. - grassland beggarticks

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