North America Non-native Plant

Astrebla

Botanical name: Astrebla

USDA symbol: ASTRE2

Habit: grass

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

Astrebla: The Tough-as-Nails Mitchell Grass That Thrives Where Others Give Up If you’re looking for a grass that laughs in the face of drought and still manages to look elegant doing it, let me introduce you to Astrebla, better known as Mitchell grass. This remarkable genus of Australian native grasses ...

Astrebla: The Tough-as-Nails Mitchell Grass That Thrives Where Others Give Up

If you’re looking for a grass that laughs in the face of drought and still manages to look elegant doing it, let me introduce you to Astrebla, better known as Mitchell grass. This remarkable genus of Australian native grasses has been quietly conquering some of the harshest landscapes on Earth, and it just might be the perfect addition to your water-wise garden.

What Exactly Is Mitchell Grass?

Astrebla is a genus of perennial tufted grasses that have made their home in the arid and semi-arid regions of Australia. These aren’t your typical lawn grasses – they’re the botanical equivalent of that friend who never complains, always shows up, and somehow makes everything look effortless. With their fine, narrow leaves and delicate seed heads that dance in the breeze, Mitchell grasses bring a subtle beauty that’s both understated and captivating.

Where Mitchell Grass Calls Home

Mitchell grasses are true blue Aussies, native to the vast arid and semi-arid regions across Australia. They’ve adapted to some of the continent’s most challenging environments, from the red dirt country of the Outback to the edges of more temperate zones. These grasses have essentially written the book on survival in tough conditions.

Why You Might Want to Invite Mitchell Grass to Your Garden

Here’s where Astrebla really shines – it’s the ultimate low-maintenance, high-impact plant for the right situation:

  • Drought champion: Once established, these grasses can survive on minimal water, making them perfect for xerophytic gardens
  • Erosion fighter: Their deep root systems help stabilize soil, making them excellent for slopes and problem areas
  • Wildlife friendly: While wind-pollinated themselves, they provide valuable habitat structure for beneficial insects and small wildlife
  • Low maintenance: Perfect for gardeners who want beauty without the fuss
  • Authentic charm: Adds genuine native character to Australian native gardens

The Ideal Garden Setting

Mitchell grass isn’t trying to be your front lawn – and that’s perfectly fine! It’s best suited for:

  • Native Australian plant gardens
  • Drought-tolerant landscapes
  • Naturalistic prairie-style plantings
  • Erosion control areas
  • Low-water usage landscapes

Growing Mitchell Grass Successfully

The beauty of Astrebla is in its simplicity. These grasses have spent millennia perfecting the art of thriving in challenging conditions, so your job is mostly to not interfere with their natural talents.

Location and Light

Give your Mitchell grass full sun – they’ve evolved to handle the intense Australian sun, so don’t coddle them with shade. They want to bask in all the light they can get.

Soil Requirements

Well-draining soil is non-negotiable. These grasses hate wet feet and will quickly let you know if drainage is poor. They’re remarkably adaptable to different soil types, but drainage trumps everything else.

Watering Wisdom

Here’s where many gardeners go wrong – less is more with Mitchell grass. Water regularly during establishment (the first growing season), but once they’re settled in, step back and let nature take the wheel. Overwatering is more likely to kill them than drought.

Climate Considerations

If you’re gardening outside Australia, Mitchell grass performs best in similar climates – think USDA zones 9-11 with hot, dry summers and mild winters. They’re not fans of humidity or consistently wet conditions.

A Word About Sourcing

Since Astrebla species are native to Australia, sourcing can be challenging in other regions. If you’re gardening outside Australia, consider native alternatives that offer similar drought tolerance and aesthetic appeal. Always purchase from reputable native plant nurseries and never collect from wild populations.

The Bottom Line

Mitchell grass isn’t for every garden or every gardener, but for those dealing with challenging dry conditions or wanting to create an authentic Australian native landscape, it’s hard to beat. These grasses offer the rare combination of toughness, beauty, and ecological value that makes them truly special. Just remember – respect their independence, don’t overwater, and enjoy watching them transform your challenging spaces into something beautiful and resilient.

Astrebla

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

Astrebla F. Muell. ex Benth.

Species

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