North America Non-native Plant

Paspalum Haumanii

Botanical name: Paspalum haumanii

USDA symbol: PAHA13

Habit: grass

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

Paspalum haumanii: A Mysterious Grass Worth Knowing About If you’ve stumbled across the name Paspalum haumanii in your native plant research, you’re not alone in wondering what exactly this grass is all about. This member of the Poaceae family (that’s the grass family for those keeping track) is something of ...

Paspalum haumanii: A Mysterious Grass Worth Knowing About

If you’ve stumbled across the name Paspalum haumanii in your native plant research, you’re not alone in wondering what exactly this grass is all about. This member of the Poaceae family (that’s the grass family for those keeping track) is something of an enigma in the gardening world.

What We Know (And What We Don’t)

Paspalum haumanii belongs to the diverse Paspalum genus, which includes hundreds of grass species found throughout warmer regions of the world. However, this particular species seems to be playing hard to get when it comes to detailed information. Unlike its more famous cousins in the Paspalum family, P. haumanii doesn’t have a well-documented common name or widely available growing information.

What we can tell you is that as a member of the grass family, it shares the characteristic growth habit of other grasses – think narrow leaves, fibrous root systems, and that unmistakable grass-like appearance that makes these plants so valuable for erosion control and habitat creation.

The Challenge of Rare Information

Here’s where things get interesting (and a bit frustrating for curious gardeners): reliable, specific information about Paspalum haumanii is remarkably scarce. This could mean several things:

  • It might be an extremely localized species with a very limited native range
  • It could be a recently described species that hasn’t made its way into common horticultural use
  • The taxonomic status might be uncertain or under revision
  • It may be known by different names in different regions

What This Means for Gardeners

If you’re considering adding Paspalum haumanii to your landscape, you might want to pump the brakes for a moment. Without clear information about its native status, growing requirements, or potential invasiveness, it’s difficult to make an informed decision about whether this grass belongs in your garden.

More importantly, if you can’t easily find this plant at reputable native plant nurseries or through conservation organizations, that’s usually a red flag that either the plant is extremely rare (and shouldn’t be disturbed in the wild) or that there might be better alternatives available.

Better Alternatives to Consider

Instead of chasing after this elusive grass, why not consider some well-documented native Paspalum species that might be available in your area? Many Paspalum grasses are excellent choices for:

  • Erosion control on slopes and disturbed areas
  • Wildlife habitat and food sources
  • Low-maintenance groundcover in appropriate climates
  • Rain gardens and areas with variable moisture

The Bottom Line

While Paspalum haumanii might sound intriguing, the lack of available information makes it a risky choice for most gardeners. Your time and energy are better spent researching and planting well-documented native grasses that you can actually find, grow successfully, and enjoy watching thrive in your landscape.

If you’re particularly interested in this species for research purposes or because you believe you’ve encountered it in the wild, consider reaching out to local botanists, university extension programs, or native plant societies. They might have more specific information or can help you identify what you’re actually looking at.

Remember, the best native plants for your garden are the ones you can actually grow – and grow well. Sometimes the most mysterious plants are mysterious for good reason!

Paspalum Haumanii

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 haumanii Parodi

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