North America Native Plant

Seashore Centipede Grass

Botanical name: Ischaemum muticum

USDA symbol: ISMU

Life cycle: perennial

Habit: grass

Native status: Native to Pacific Basin excluding Hawaii  

Seashore Centipede Grass: A Resilient Coastal Native Worth Considering Meet seashore centipede grass (Ischaemum muticum), a tough-as-nails perennial grass that’s perfectly at home where land meets sea. Also known as drought grass—a name that gives away one of its superpowers—this unassuming native has been quietly doing the important work of ...

Seashore Centipede Grass: A Resilient Coastal Native Worth Considering

Meet seashore centipede grass (Ischaemum muticum), a tough-as-nails perennial grass that’s perfectly at home where land meets sea. Also known as drought grass—a name that gives away one of its superpowers—this unassuming native has been quietly doing the important work of coastal protection across Pacific islands for centuries.

Where You’ll Find This Coastal Champion

Seashore centipede grass is native to the Pacific Basin, with its natural range including Guam and Palau. This grass has evolved specifically to handle the challenging conditions that come with coastal living, making it a true specialist in its field.

What Makes Seashore Centipede Grass Special

As a member of the grass family, Ischaemum muticum might not win any beauty contests, but it definitely deserves a medal for toughness. This perennial grass has adapted to thrive in conditions that would send most plants packing—salt spray, sandy soils, and extended dry periods are all in a day’s work for this coastal survivor.

While it may not have the flashy flowers of ornamental plants, seashore centipede grass brings a different kind of beauty to the landscape: the understated elegance of a plant perfectly suited to its environment.

Why You Might Want to Grow It

Here’s where seashore centipede grass really shines:

  • Erosion control hero: Those roots are serious about holding soil in place, making it invaluable for coastal properties
  • Salt tolerance: Doesn’t bat an eye at salt spray that would damage other plants
  • Drought champion: Once established, it can handle extended dry periods like a pro
  • Low maintenance: This is not a high-maintenance plant—it prefers to be left alone
  • Native plant gardening: Perfect for gardeners wanting to support local ecosystems

Best Garden Applications

Seashore centipede grass isn’t the star of every garden show, but it’s perfect for specific situations:

  • Coastal landscapes where erosion control is needed
  • Xerophytic or drought-tolerant garden designs
  • Native plant gardens in appropriate regions
  • Naturalistic plantings that mimic coastal ecosystems
  • Areas with sandy, well-draining soils

Growing Conditions and Care

The beauty of seashore centipede grass lies in its simplicity. This plant thrives in:

  • Sunlight: Full sun exposure
  • Soil: Sandy, well-draining soils (it actually prefers poor soils)
  • Water: Drought tolerant once established; avoid overwatering
  • Climate: Tropical to subtropical zones (USDA zones 10-12)

Planting and Maintenance Tips

Getting seashore centipede grass established is refreshingly straightforward:

  • Plant during warm months when growth is most active
  • Ensure excellent drainage—this grass hates wet feet
  • Water regularly during establishment, then back off
  • No fertilizer needed—it’s adapted to nutrient-poor soils
  • Minimal pruning required; let it grow naturally

Is This Grass Right for Your Garden?

Seashore centipede grass is definitely a specialist, not a generalist. It’s perfect if you’re dealing with coastal conditions, need erosion control, or want to create a native plant garden in the Pacific region. However, if you’re looking for ornamental appeal or live outside its natural climate range, you might want to consider other options.

For gardeners in Guam, Palau, or similar Pacific locations dealing with challenging coastal conditions, seashore centipede grass could be exactly what you need—a low-maintenance, native solution that works with nature rather than against it.

Remember, the best gardens often feature plants that are naturally suited to their location. Seashore centipede grass might not be flashy, but in the right setting, it’s absolutely invaluable.

Seashore Centipede Grass

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

Poaceae Barnhart - Grass family

Genus

Ischaemum L. - murainagrass

Species

Ischaemum muticum L. - seashore centipede grass

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