North America Native Plant

Twigrush

Botanical name: Machaerina

USDA symbol: MACHA2

Life cycle: perennial

Habit: grass

Native status: Native to Hawaii âš˜ Native to Pacific Basin excluding Hawaii âš˜ Native to Puerto Rico  

Twigrush: The Unsung Hero of Pacific Island Gardens If you’re looking to create an authentic tropical landscape or support native ecosystems in Hawaii, Puerto Rico, or other Pacific islands, let me introduce you to a plant that might just become your new favorite: twigrush. This humble yet resilient sedge brings ...

Twigrush: The Unsung Hero of Pacific Island Gardens

If you’re looking to create an authentic tropical landscape or support native ecosystems in Hawaii, Puerto Rico, or other Pacific islands, let me introduce you to a plant that might just become your new favorite: twigrush. This humble yet resilient sedge brings both ecological value and understated beauty to gardens across the Pacific.

What Exactly Is Twigrush?

Twigrush (Machaerina) is a perennial sedge that’s native to several Pacific regions, including Hawaii, Puerto Rico, and various Pacific Basin islands. You might also hear it called `uki in some areas. Don’t let the name fool you – while it’s called twigrush, it’s actually part of the sedge family, making it a grass-like plant that forms distinctive tufted clumps.

Where Does Twigrush Call Home?

This versatile plant has quite the Pacific pedigree! Twigrush naturally grows in Hawaii, Palau, and Puerto Rico, making it a fantastic choice for gardeners in these regions who want to support local ecosystems. If you’re gardening in these areas, you’re essentially welcoming back a plant that belongs there.

Why You Might Want Twigrush in Your Garden

Here’s where twigrush really shines – it’s the perfect plant for gardeners who want to:

  • Create authentic Pacific island landscapes
  • Support native plant communities
  • Add texture and movement to their gardens
  • Establish low-maintenance plantings
  • Control erosion in challenging areas

The plant forms attractive clumps with its grass-like foliage and develops interesting brownish seed heads that add visual appeal and textural contrast to garden beds.

Growing Conditions That Make Twigrush Happy

The good news is that twigrush isn’t particularly fussy once you understand its preferences. This sedge thrives in:

  • Moist to wet soils (it loves consistent moisture)
  • Full sun to partial shade conditions
  • USDA hardiness zones 9-11
  • Tropical and subtropical climates

If you’re in a cooler climate, twigrush probably isn’t the right choice for your garden, as it’s specifically adapted to warm, tropical conditions.

Planting and Care Tips

Once established, twigrush is refreshingly low-maintenance. Here’s how to set it up for success:

  • Plant in areas with reliable moisture – think bog gardens, rain gardens, or naturally wet spots
  • Give it room to form its natural clumping habit
  • Mulch around new plantings to retain moisture
  • Be patient – like many native plants, it may take time to establish but will reward you with years of reliable performance

The Perfect Garden Companion

Twigrush works beautifully as an accent plant in tropical native gardens, where its distinctive form provides contrast to broader-leafed tropical plants. It’s also excellent for erosion control on slopes or in areas where you need a plant that can handle both wet conditions and occasional drought once established.

Consider pairing it with other Pacific native plants to create authentic regional landscapes that support local wildlife and require minimal inputs once established.

Is Twigrush Right for Your Garden?

If you’re gardening in Hawaii, Puerto Rico, Palau, or similar Pacific climates, and you want to support native plant communities while adding interesting texture to your landscape, twigrush could be an excellent choice. It’s particularly valuable for gardeners interested in sustainable, region-appropriate landscaping.

However, if you’re outside its native range or in cooler climates, you’d be better served by choosing sedges native to your specific region. Every area has its own wonderful native grass-like plants that will provide similar benefits while supporting local ecosystems.

Ready to add some authentic Pacific island character to your garden? Twigrush might just be the perfect unassuming hero your landscape has been waiting for!

Twigrush

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Commelinidae

Order

Cyperales

Family

Cyperaceae Juss. - Sedge family

Genus

Machaerina Vahl - twigrush

Species

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