North America Non-native Plant

Setaria Poiretiana

Botanical name: Setaria poiretiana

USDA symbol: SEPO8

Habit: grass

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

The Mystery of Setaria poiretiana: A Grass That’s Hard to Pin Down If you’ve stumbled across the name Setaria poiretiana while researching grasses for your garden, you might find yourself scratching your head. This particular member of the Setaria genus is something of an enigma in the plant world – ...

The Mystery of Setaria poiretiana: A Grass That’s Hard to Pin Down

If you’ve stumbled across the name Setaria poiretiana while researching grasses for your garden, you might find yourself scratching your head. This particular member of the Setaria genus is something of an enigma in the plant world – and that’s putting it mildly!

What We Know (And What We Don’t)

Setaria poiretiana belongs to the grass family and falls into the category of graminoids – those grass-like plants that include true grasses, sedges, and rushes. Beyond that basic classification, reliable information about this specific species becomes surprisingly scarce.

The lack of detailed documentation raises some red flags for gardeners. In the plant world, species that are poorly documented often fall into one of several categories: they might be extremely rare, potentially misidentified, or sometimes they’re synonyms for other, better-known species.

Geographic Distribution and Native Status

Unfortunately, the geographic distribution and native status of Setaria poiretiana remain unclear from available sources. This uncertainty makes it difficult to determine where this grass might naturally occur or whether it would be appropriate for native gardening projects.

The Gardener’s Dilemma

Here’s where things get tricky for gardeners. Without clear information about:

  • Native range and status
  • Growing requirements
  • Mature size and growth habit
  • Invasive potential
  • Wildlife benefits

It becomes nearly impossible to make an informed decision about whether to include this grass in your landscape.

A Better Path Forward

If you’re interested in incorporating Setaria grasses into your garden, consider these well-documented alternatives:

  • Setaria pumila (Yellow foxtail) – though often considered weedy
  • Setaria italica (Foxtail millet) – grown as an ornamental annual
  • Native grass alternatives specific to your region

The Bottom Line

When it comes to Setaria poiretiana, the responsible gardening approach is to proceed with extreme caution – or better yet, choose a different species entirely. The lack of reliable information about this grass means you could be introducing a plant with unknown characteristics, growth habits, or ecological impacts to your garden.

Instead, focus your energy on well-documented native grasses that will provide known benefits to your local ecosystem. Your local native plant society or extension office can help you identify beautiful, beneficial grasses that are perfect for your specific region and growing conditions.

Sometimes in gardening, the most interesting choice isn’t necessarily the best choice – and Setaria poiretiana seems to fall squarely into that category!

Setaria Poiretiana

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 poiretiana (Schult.) Kunth [excluded]

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