North America Non-native Plant

Rosha Grass

Botanical name: Cymbopogon martinii

USDA symbol: CYMA15

Habit: grass

Native status: Not native but doesn't reproduce and persist in the wild

Synonyms: Andropogon martinii Roxb. (ANMA17)   

Rosha Grass: An Aromatic Addition to Your Garden Meet rosha grass (Cymbopogon martinii), a fragrant perennial grass that’s been catching the attention of gardeners looking for something a little different. This aromatic beauty belongs to the same family as lemongrass and brings its own unique charm to garden spaces. While ...

Rosha Grass: An Aromatic Addition to Your Garden

Meet rosha grass (Cymbopogon martinii), a fragrant perennial grass that’s been catching the attention of gardeners looking for something a little different. This aromatic beauty belongs to the same family as lemongrass and brings its own unique charm to garden spaces. While it might not be a household name like its more famous cousins, rosha grass has plenty to offer the adventurous gardener.

What Exactly is Rosha Grass?

Rosha grass is a member of the grass family (Poaceae) and goes by the botanical name Cymbopogon martinii. You might also see it listed under its old scientific name, Andropogon martinii. This perennial grass forms attractive clumps with narrow, aromatic leaves and produces delicate, feathery seed heads that dance in the breeze.

Native to India and Southeast Asia, this grass has been valued for centuries in its homeland, not just for its ornamental qualities but also for its pleasant fragrance. It’s a classic example of how plants from different corners of the world can find new homes in our gardens.

Why Consider Rosha Grass for Your Garden?

There are several compelling reasons why you might want to give rosha grass a try:

  • Aromatic appeal: The leaves release a pleasant fragrance when brushed against or crushed
  • Low maintenance: Once established, it’s quite drought tolerant and requires minimal care
  • Textural interest: Adds movement and soft texture to garden borders
  • Unique character: Not commonly grown, so it adds an element of surprise to your landscape

Growing Conditions and Care

Rosha grass is fairly straightforward to grow if you can provide the right conditions:

Climate Requirements: This grass thrives in USDA hardiness zones 9-11, making it best suited for warmer climates. If you’re in a cooler area, you might need to treat it as an annual or grow it in containers that can be moved indoors.

Sun and Soil: Give rosha grass a spot in full sun with well-draining soil. It’s not particularly fussy about soil type, but it absolutely cannot tolerate waterlogged conditions.

Watering: While it needs regular water to get established, mature plants are quite drought tolerant. Water deeply but infrequently rather than giving it frequent light sprinklings.

Planting and Maintenance Tips

Getting rosha grass established in your garden is relatively simple:

  • Plant divisions in spring after the last frost
  • Space plants about 2-3 feet apart to allow for mature spread
  • Water regularly for the first growing season
  • Cut back to about 6 inches in late winter or early spring
  • Divide clumps every 3-4 years to maintain vigor

Garden Design Ideas

Rosha grass works beautifully in several garden styles:

  • Mediterranean gardens: Perfect companion for lavender, rosemary, and other aromatic herbs
  • Ornamental grass gardens: Provides textural contrast with other grasses
  • Herb gardens: Adds fragrance and ornamental value
  • Border plantings: Creates soft, naturalistic edges

A Word About Native Alternatives

While rosha grass can be a delightful addition to appropriate climates, it’s worth considering native grasses that might offer similar benefits while supporting local ecosystems. Depending on your region, native options like little bluestem, buffalo grass, or native sedges might provide comparable ornamental value while offering superior wildlife benefits.

The Bottom Line

Rosha grass is an interesting option for gardeners in warmer climates who want something aromatic and low-maintenance. While it won’t support native wildlife like indigenous plants would, it’s not invasive and can be a pleasant addition to the right garden setting. Just remember that it needs warmth to thrive, so check your hardiness zone before making the investment.

Whether you choose rosha grass or explore native alternatives, the key is selecting plants that will thrive in your specific conditions and align with your gardening goals. Happy gardening!

Rosha 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

Cymbopogon Spreng. - lemon grass

Species

Cymbopogon martinii (Roxb.) J.F. Watson - rosha grass

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