North America Non-native Plant

Paspalum Commersonii

Botanical name: Paspalum commersonii

USDA symbol: PACO46

Habit: grass

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

Paspalum commersonii: A Mysterious Grass Worth Investigating If you’ve stumbled across the name Paspalum commersonii in your plant research, you’re likely wondering what exactly this grass is and whether it belongs in your garden. Well, you’re not alone in your curiosity – this particular member of the Paspalum genus is ...

Paspalum commersonii: A Mysterious Grass Worth Investigating

If you’ve stumbled across the name Paspalum commersonii in your plant research, you’re likely wondering what exactly this grass is and whether it belongs in your garden. Well, you’re not alone in your curiosity – this particular member of the Paspalum genus is something of an enigma in the gardening world.

What We Know About This Elusive Grass

Paspalum commersonii belongs to the Poaceae family, making it a true grass alongside its more familiar cousins like lawn grasses and ornamental varieties. As part of the broader Paspalum genus, it shares lineage with well-known species like Bahiagrass and Dallisgrass, though it appears to fly much further under the radar than its popular relatives.

The challenge with Paspalum commersonii is that detailed information about its characteristics, native range, and growing requirements remains frustratingly scarce in mainstream horticultural literature. This could indicate that it’s either a relatively rare species, has limited ornamental value, or simply hasn’t caught the attention of gardeners and researchers in the same way other grasses have.

The Geographic Mystery

Unfortunately, the specific geographic distribution of Paspalum commersonii isn’t well-documented in accessible sources, making it difficult to determine where this grass naturally occurs or where it might thrive in cultivation.

Should You Grow Paspalum commersonii?

Here’s where things get tricky. Without clear information about this grass’s growth habits, environmental needs, or ornamental qualities, it’s challenging to make a strong recommendation either way. If you’re considering this species for your garden, you might want to ask yourself a few questions:

  • Where did you encounter this plant name, and what drew you to it?
  • Are you looking for a specific type of grass for a particular purpose?
  • Would a better-documented Paspalum species serve your needs just as well?

Consider Well-Known Alternatives

Given the limited information available about Paspalum commersonii, you might want to explore other members of the Paspalum family that are better understood and more readily available. Some options include:

  • Paspalum vaginatum (Seashore Paspalum) – excellent for coastal areas
  • Paspalum notatum (Bahiagrass) – drought-tolerant and low-maintenance
  • Paspalum quadrifarium (Giant Paspalum) – striking ornamental grass

The Bottom Line

Paspalum commersonii remains something of a botanical puzzle. While it’s certainly a legitimate member of the grass family, the lack of readily available cultivation information makes it a risky choice for most gardeners. If you’re dead set on growing this particular species, you’ll likely need to do some serious detective work to track down seeds or plants, and you’ll be pioneering its cultivation without much guidance.

Sometimes the most rewarding gardening adventures come from working with lesser-known plants, but they also come with the highest likelihood of frustration. If you’re up for the challenge and have a specific reason for wanting this particular grass, proceed with caution and plenty of experimentation. For most gardeners, though, there are plenty of other wonderful grasses that will give you more bang for your buck and far less uncertainty.

Have you encountered Paspalum commersonii in the wild or in cultivation? We’d love to hear about your experiences with this mysterious grass!

Paspalum Commersonii

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

Paspalum L. - crowngrass

Species

Paspalum commersonii Lam. [excluded]

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