North America Non-native Plant

Setaria Incrassata

Botanical name: Setaria incrassata

USDA symbol: SEIN8

Habit: grass

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

Synonyms: Setaria gerrardii Stapf (SEGE3)  ⚘  Setaria holstii R.A.W. Herrm. (SEHO5)  ⚘  Setaria perberbis Stapf ex de Wit (SEPE7)  ⚘  Setaria phanerococca Stapf (SEPH2)  ⚘  Setaria woodii Hack. (SEWO3)   

Setaria incrassata: The Mystery Grass That’s Hard to Pin Down Sometimes in the world of native plants, you stumble across a botanical puzzle that leaves even seasoned gardeners scratching their heads. Meet Setaria incrassata – a grass species that’s more mysterious than a plant detective novel and about as elusive ...

Setaria incrassata: The Mystery Grass That’s Hard to Pin Down

Sometimes in the world of native plants, you stumble across a botanical puzzle that leaves even seasoned gardeners scratching their heads. Meet Setaria incrassata – a grass species that’s more mysterious than a plant detective novel and about as elusive as a unicorn in your backyard.

What Exactly Is Setaria incrassata?

Setaria incrassata is a graminoid, which is a fancy way of saying it’s a grass or grass-like plant. Think of it as part of that big, green family that includes everything from your lawn grass to those ornamental fountain grasses that dance in the breeze. This particular species has collected quite a few aliases over the years – botanists have also called it Setaria gerrardii, Setaria holstii, Setaria perberbis, Setaria phanerococca, and Setaria woodii. With that many names, you’d think it was trying to hide from something!

The Great Geographic Mystery

Here’s where things get interesting (and a bit frustrating for us plant lovers): the exact native range and geographic distribution of Setaria incrassata remains largely unknown in readily available sources. Based on the scientific synonyms and naming patterns, it appears to have African origins, but pinpointing exactly where this grass calls home is like trying to find a needle in a haystack.

Why This Matters for Your Garden

You might be wondering, Should I plant this mystery grass? Well, here’s the thing – with so little information available about Setaria incrassata’s specific growing requirements, native status, and potential impacts, it’s pretty much impossible to give you solid growing advice. This is actually a perfect example of why thorough plant research matters before adding anything new to your landscape.

The Challenge of Lesser-Known Species

Setaria incrassata represents a common challenge in native gardening: some plant species simply don’t have the wealth of cultivation information that popular natives enjoy. Without knowing its:

  • Specific growing conditions and soil preferences
  • Water requirements and drought tolerance
  • Wildlife and pollinator benefits
  • Mature size and growth rate
  • Hardiness zones and climate adaptability
  • Potential invasive tendencies

It becomes nearly impossible to recommend it for home gardens with confidence.

What Should You Do Instead?

If you’re drawn to native grasses (and who wouldn’t be – they’re fantastic!), consider focusing on well-documented Setaria species or other native grasses with proven track records in cultivation. Your local native plant society, extension office, or reputable native plant nursery can point you toward grasses that will thrive in your specific region while supporting local wildlife.

The Bottom Line

While Setaria incrassata might sound intriguing, the lack of available growing information makes it a poor choice for most gardeners. Sometimes the most responsible thing we can do is admit when we don’t know enough about a plant to recommend it. Instead, channel that enthusiasm into researching and growing native grasses that are better understood and documented – your garden (and the local ecosystem) will thank you for it!

Remember, successful native gardening is all about choosing the right plant for the right place with the right information. When that information is missing, it’s usually best to look elsewhere in the wonderful world of native plants.

Setaria Incrassata

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

Setaria P. Beauv. - bristlegrass

Species

Setaria incrassata (Hochst.) Hack.

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