North America Non-native Plant

Chilean Rabbitsfoot Grass

Botanical name: Polypogon australis

USDA symbol: POAU3

Life cycle: perennial

Habit: grass

Native status: Non-native, reproduces and persists in the wild in the lower 48 states  

Chilean Rabbitsfoot Grass: A Soft Addition to Wet Gardens If you’re looking for a grass that brings a touch of softness to your water-loving garden spaces, Chilean rabbitsfoot grass might have caught your eye. This perennial grass, with its delightfully fuzzy seed heads, has found its way into several western ...

Chilean Rabbitsfoot Grass: A Soft Addition to Wet Gardens

If you’re looking for a grass that brings a touch of softness to your water-loving garden spaces, Chilean rabbitsfoot grass might have caught your eye. This perennial grass, with its delightfully fuzzy seed heads, has found its way into several western states and offers an interesting option for gardeners who appreciate texture and movement in their landscapes.

What is Chilean Rabbitsfoot Grass?

Chilean rabbitsfoot grass (Polypogon australis) is a perennial grass that forms attractive tufted clumps. True to its common name, this grass produces soft, feathery seed heads that have an almost rabbitsfoot-like appearance when they emerge. The silvery, plume-like inflorescences create a gentle, cloud-like effect that sways beautifully in the breeze.

Where Does It Grow?

Originally native to South America, particularly Chile and Argentina, this grass has established itself in several western U.S. states. You’ll currently find Chilean rabbitsfoot grass growing in:

  • Arizona
  • California
  • Nevada
  • Washington

As a non-native species that reproduces on its own in the wild, it has found suitable conditions in these regions to persist and spread naturally.

Growing Conditions and Care

Chilean rabbitsfoot grass is quite particular about its growing conditions, which makes it both easier to place in your garden and potentially easier to manage. Here’s what this grass needs to thrive:

Water Requirements

This grass loves moisture! It’s classified as a facultative wetland plant in both the Arid West and Western Mountains regions, meaning it usually grows in wetlands but can tolerate some drier conditions. Plan to keep the soil consistently moist to wet.

Light and Soil

Chilean rabbitsfoot grass performs best in full sun to partial shade. It’s not particularly fussy about soil type as long as moisture levels remain adequate.

Hardiness

This perennial grass typically thrives in USDA zones 8-10, making it suitable for warmer regions with mild winters.

Garden Design and Landscaping Uses

Chilean rabbitsfoot grass can play several roles in your landscape design:

  • Water garden borders and edges
  • Bog gardens and rain gardens
  • Naturalistic wetland plantings
  • Texture contrast in mixed plantings

The soft, silvery seed heads provide excellent movement and catch light beautifully, making them particularly striking when backlit by morning or evening sun.

Should You Plant It?

While Chilean rabbitsfoot grass can be an attractive addition to wet garden areas, there are a few things to consider. As a non-native species, it doesn’t provide the same ecological benefits as native grasses. Its ability to spread via rhizomes means it could potentially become more aggressive than you initially planned.

Native Alternatives to Consider

Before choosing Chilean rabbitsfoot grass, consider these native options that provide similar aesthetic appeal while supporting local ecosystems:

  • Native sedges (Carex species) for similar texture and wetland tolerance
  • Native rushes (Juncus species) for upright form in wet areas
  • Regional native grasses adapted to moist conditions

Planting and Maintenance Tips

If you decide to grow Chilean rabbitsfoot grass, here are some key care considerations:

  • Plant in spring after frost danger has passed
  • Ensure consistent moisture throughout the growing season
  • Monitor for spreading and contain if necessary
  • Cut back in late winter or early spring before new growth
  • Consider growing in containers to limit spread

Wildlife and Pollinator Value

As a wind-pollinated grass, Chilean rabbitsfoot grass doesn’t offer significant direct benefits to pollinators like bees and butterflies. While it may provide some habitat structure, native grasses and sedges would offer greater wildlife value and food sources for local fauna.

The Bottom Line

Chilean rabbitsfoot grass can be a lovely addition to water-focused gardens, offering unique texture and visual interest with its soft, silvery seed heads. However, as a non-native species with spreading tendencies, it’s worth weighing against native alternatives that provide similar beauty while supporting your local ecosystem. If you do choose to grow it, keep an eye on its spread and enjoy those delightful fuzzy plumes that give this grass its charming common name!

Wetland Status

The rule of seasoned gardeners and landscapers is to choose the "right plant for the right place" matching plants to their ideal growing conditions, so they'll thrive with less work and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection is. While tags list watering requirements, there's more to the story.

Knowing a plant's wetland status can simplify the process by revealing the interaction between plants, water, and soil. Surprisingly, many popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. Also, it helps you make smarter gardening choices and grow healthy plants with less care and feeding, saving you time, frustration, and money while producing an attractive garden with greater ecological benefits.

Regions
Status
Moisture Conditions

Arid West

FACW

Facultative Wetland - Plants with this status usually occurs in wetlands but may occur in non-wetlands

Western Mountains, Valleys, and Coast

FACW

Facultative Wetland - Plants with this status usually occurs in wetlands but may occur in non-wetlands

Chilean Rabbitsfoot 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

Polypogon Desf. - rabbitsfoot grass

Species

Polypogon australis Brongn. - Chilean rabbitsfoot grass

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