North America Non-native Plant

Uruguayan Fountaingrass

Botanical name: Pennisetum latifolium

USDA symbol: PELA5

Life cycle: perennial

Habit: grass

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

Uruguayan Fountaingrass: A South American Beauty for Your Garden If you’re looking to add some graceful movement and texture to your landscape, Uruguayan fountaingrass (Pennisetum latifolium) might just catch your eye. This perennial ornamental grass brings a touch of South American elegance to gardens across the southern United States, though ...

Uruguayan Fountaingrass: A South American Beauty for Your Garden

If you’re looking to add some graceful movement and texture to your landscape, Uruguayan fountaingrass (Pennisetum latifolium) might just catch your eye. This perennial ornamental grass brings a touch of South American elegance to gardens across the southern United States, though it comes with some considerations worth exploring.

What Is Uruguayan Fountaingrass?

Uruguayan fountaingrass is a non-native perennial grass that originally calls Uruguay and southern South America home. As its name suggests, this grass creates fountain-like clumps of arching foliage topped with feathery, plume-like seed heads that dance beautifully in the breeze. It belongs to the large family of grasses and grass-like plants, bringing that quintessential ornamental grass charm to any setting.

Where Does It Grow?

Currently, you’ll find Uruguayan fountaingrass established in California, Louisiana, and Oklahoma. As an introduced species, it has managed to naturalize in these areas, reproducing on its own without human intervention. This adaptability speaks to its hardy nature, but also means gardeners should be mindful of its potential to spread.

Garden Appeal and Landscape Role

What makes Uruguayan fountaingrass appealing to gardeners? Here are its standout features:

  • Graceful, arching foliage that adds movement to static landscapes
  • Attractive feathery seed heads that provide visual interest
  • Low-maintenance once established
  • Drought tolerance after the first growing season
  • Works well as an accent plant or in naturalized areas

This grass shines in ornamental gardens, naturalized landscapes, and low-maintenance garden designs. It’s particularly effective when used as a border plant or scattered throughout a garden for textural contrast.

Growing Conditions and Care

Uruguayan fountaingrass thrives in USDA hardiness zones 8-11, making it suitable for warmer climates. Here’s what it needs to flourish:

  • Sunlight: Full sun for best growth and flowering
  • Soil: Well-draining soil (it’s not picky about soil type)
  • Water: Regular watering during establishment, then drought tolerant
  • Spacing: Plant clumps 2-3 feet apart to allow for mature size

Planting and Maintenance Tips

Getting started with Uruguayan fountaingrass is refreshingly straightforward:

  • Plant in spring after the last frost
  • Water regularly during the first growing season to establish roots
  • Cut back the entire plant in late winter before new growth begins
  • Minimal fertilization needed – this grass isn’t demanding
  • Watch for self-seeding and manage spread as needed

Wildlife and Pollinator Considerations

Like most grasses, Uruguayan fountaingrass is primarily wind-pollinated, so it offers limited benefits to bees and butterflies. Its wildlife value is also somewhat limited compared to native alternatives.

Should You Plant It?

While Uruguayan fountaingrass can be a lovely addition to the right garden, it’s worth considering native grass alternatives that provide similar aesthetic appeal while supporting local ecosystems. Native options often offer better wildlife habitat and are naturally adapted to local growing conditions.

If you do choose to grow Uruguayan fountaingrass, be a responsible gardener by monitoring its spread and preventing it from escaping into natural areas. Regular maintenance and deadheading can help prevent unwanted self-seeding.

Remember, the best garden is one that balances beauty with environmental responsibility – and there are plenty of stunning native grasses that can give you that fountain-like elegance while supporting your local ecosystem!

Uruguayan Fountaingrass

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

Pennisetum Rich. ex Pers. - fountaingrass

Species

Pennisetum latifolium Spreng. - Uruguayan fountaingrass

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