Non-native Plants

Bentspike Fountaingrass

Pennisetum nervosum

USDA symbol: PENE4

perennial grass

Lower 48 states: non-native, naturalized

Looking for an ornamental grass that brings movement and texture to your landscape? Bentspike fountaingrass (Pennisetum nervosum) might catch your eye with its elegant, arching foliage and feathery plumes. But before you add this perennial grass to your shopping list, let’s explore what makes this plant tick and whether it’s ...

Bentspike Fountaingrass: A Graceful Non-Native Ornamental Grass

Looking for an ornamental grass that brings movement and texture to your landscape? Bentspike fountaingrass (Pennisetum nervosum) might catch your eye with its elegant, arching foliage and feathery plumes. But before you add this perennial grass to your shopping list, let’s explore what makes this plant tick and whether it’s the right fit for your garden.

What is Bentspike Fountaingrass?

Bentspike fountaingrass is a perennial ornamental grass that belongs to the large family of grasses and grass-like plants. You might also see it listed under its scientific synonym, Cenchrus nervosus, in some plant catalogs. This graceful grass creates fountain-like clumps with arching leaves and produces attractive, feathery seed heads that dance in the breeze.

Where Does It Come From?

Here’s something important to know upfront: bentspike fountaingrass isn’t a native North American plant. Originally from Africa, this grass has made its way to parts of the United States where it now grows and reproduces on its own in the wild. Currently, you’ll find established populations in California and Texas.

  • Species observed
  • No observations

The Appeal Factor

So what draws gardeners to this non-native grass? Bentspike fountaingrass offers several appealing qualities:

  • Elegant, fountain-like growth habit that adds vertical interest
  • Feathery seed heads that create movement and texture
  • Drought tolerance once established
  • Low maintenance requirements
  • Year-round structure in mild climates

Growing Conditions and Care

If you’re considering bentspike fountaingrass for your landscape, here’s what it needs to thrive:

Climate: This grass performs best in USDA hardiness zones 8-11, making it suitable for warmer regions with mild winters.

Sun and Soil: Give it full sun and well-draining soil. Like many grasses from arid regions, it doesn’t appreciate wet feet and can suffer in soggy conditions.

Water Needs: While you’ll need to water regularly during the first growing season to help establish the root system, bentspike fountaingrass becomes quite drought tolerant once settled in.

Planting and Maintenance Tips

  • Plant in spring after the last frost when soil is warming
  • Space plants according to their mature size to allow for good air circulation
  • Water consistently the first year, then reduce watering frequency
  • Cut back in late winter or early spring before new growth emerges
  • Divide clumps every 3-4 years if they become too large

Garden Design Ideas

Bentspike fountaingrass works well in several landscape settings:

  • Drought-tolerant and Mediterranean-style gardens
  • Contemporary landscapes where architectural plants are featured
  • Mixed perennial borders for texture contrast
  • Mass plantings for dramatic effect
  • Container gardens in larger pots

Wildlife and Pollinator Considerations

As a wind-pollinated grass, bentspike fountaingrass doesn’t offer much for pollinators like bees and butterflies. The seeds may provide some food for birds, but overall, its wildlife value is limited compared to native alternatives.

The Native Alternative Question

Since bentspike fountaingrass is non-native, you might want to consider native ornamental grasses that could fill a similar role in your landscape. Depending on your region, options might include native Muhlenbergia species, native Sporobolus varieties, or regional native bunch grasses that offer similar aesthetic appeal while supporting local wildlife.

Should You Plant It?

The decision to grow bentspike fountaingrass comes down to your gardening priorities and local conditions. If you’re drawn to its graceful form and drought tolerance, and you’re in an appropriate climate zone, it can be a reliable landscape plant. However, given its non-native status and ability to self-seed, consider researching native alternatives that might provide similar benefits while supporting local ecosystems.

Whatever you choose, make sure it fits your garden’s conditions and maintenance preferences. After all, the best plant for your garden is one that thrives with the care you’re able to provide while contributing positively to your local landscape.

Pennisetum nervosum is also known as...

Often we refer to plants by their common names. When shopping for plants the scientific name is the best way to positively identify the plant species you desire. But some plants have more than one name! While it doesn't happen often, nurseries might display one name while you're searching for another. Pennisetum nervosum is also known as:

Cenchrus nervosus | USDA symbol: CENE

Why do some plants have more than one name? Over time plant species may be renamed for a few reasons:

  1. Botanists in different regions named the same plant without knowing it had already been classified.
  2. A species was reclassified after scientific advances in, for example, DNA analysis.
  3. Slight variations within a species are sometimes mistakenly identified as entirely new species.

Classification

Group: Monocot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Liliopsida - Monocotyledons
Subclass: Commelinidae
Order: Cyperales
Family: Poaceae Barnhart - Grass family
Genus: Pennisetum Rich. ex Pers. - fountaingrass

Species: Pennisetum nervosum (Nees) Trin. - bentspike fountaingrass

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