North America Non-native Plant

Kikuyugrass

Botanical name: Pennisetum incomptum

USDA symbol: PEIN14

Habit: grass

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

Kikuyugrass (Pennisetum incomptum): A Mystery Grass Worth Investigating If you’ve stumbled across the name kikuyugrass or its botanical name Pennisetum incomptum in your gardening research, you might be scratching your head trying to find solid information about this grass species. You’re not alone! This particular plant presents quite the botanical ...

Kikuyugrass (Pennisetum incomptum): A Mystery Grass Worth Investigating

If you’ve stumbled across the name kikuyugrass or its botanical name Pennisetum incomptum in your gardening research, you might be scratching your head trying to find solid information about this grass species. You’re not alone! This particular plant presents quite the botanical puzzle for gardeners and researchers alike.

What We Know (And Don’t Know) About This Grass

Pennisetum incomptum falls into the grass family, making it what botanists call a graminoid – essentially a grass or grass-like plant. This puts it in the same broad category as familiar lawn grasses, ornamental fountain grasses, sedges, and rushes.

Here’s where things get tricky: despite having the common name kikuyugrass, there’s very limited reliable information available specifically about Pennisetum incomptum in botanical databases and native plant resources. This is unusual for a grass species, especially one with such a distinctive common name.

The Kikuyugrass Confusion

The common name kikuyugrass is more typically associated with Pennisetum clandestinum, a well-documented species that’s quite different from what little we know about P. incomptum. This naming overlap creates potential confusion for gardeners trying to make informed planting decisions.

Geographic Distribution and Native Status

Unfortunately, the native range and geographic distribution of Pennisetum incomptum remain unclear based on available botanical literature. Without reliable information about where this grass naturally occurs, it’s impossible to determine whether it would be appropriate for native gardening projects in any particular region.

Should You Plant Kikuyugrass?

Given the limited information available about Pennisetum incomptum, I’d recommend proceeding with extreme caution. Here’s why:

  • The lack of documented information makes it difficult to predict how this grass might behave in your garden
  • Without knowing its native status, you can’t be sure you’re supporting local ecosystems
  • Unknown growth habits could mean surprise invasive behavior
  • Proper identification is crucial but challenging with limited reference materials

Better Alternatives for Your Garden

Instead of taking a chance on this mysterious grass, consider well-documented native grass alternatives that are known to thrive in gardens while supporting local wildlife:

  • Research native grasses specific to your region through your local extension office
  • Choose ornamental grasses with documented benefits to pollinators and wildlife
  • Select species with clear growing requirements that match your garden conditions

The Bottom Line

While the mystery surrounding Pennisetum incomptum is certainly intriguing from a botanical perspective, it’s not the best choice for home gardeners who want predictable, beneficial results. When in doubt, stick with well-researched native plants that have documented benefits for your local ecosystem.

If you’re determined to learn more about this elusive grass, consider reaching out to botanical institutions or grass specialists who might have additional insights. Sometimes the most interesting plants are the ones that keep their secrets!

Kikuyugrass

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 incomptum Nees ex Steud. - kikuyugrass

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