North America Non-native Plant

Axonopus Siccus

Botanical name: Axonopus siccus

USDA symbol: AXSI

Habit: grass

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

Synonyms: Axonopus barbiger (Kunth) Hitchc. (AXBA2)   

Axonopus siccus: The Mystery Grass You’ve Probably Never Heard Of If you’ve stumbled across the name Axonopus siccus while browsing through botanical databases or plant lists, you’re not alone in scratching your head. This little-known grass species is something of an enigma in the gardening world, with surprisingly little information ...

Axonopus siccus: The Mystery Grass You’ve Probably Never Heard Of

If you’ve stumbled across the name Axonopus siccus while browsing through botanical databases or plant lists, you’re not alone in scratching your head. This little-known grass species is something of an enigma in the gardening world, with surprisingly little information available about its cultivation or garden use.

What We Know About Axonopus siccus

Axonopus siccus belongs to the grass family (Poaceae) and is classified as a monocot. Like other members of the Axonopus genus, it’s likely a warm-season grass, but beyond this basic classification, details about this particular species are remarkably scarce in horticultural literature.

The species is sometimes listed under the synonym Axonopus barbiger (Kunth) Hitchc., which you might encounter in older botanical references or scientific papers.

The Information Gap

Here’s where things get interesting (or frustrating, depending on your perspective): there’s a notable lack of readily available information about Axonopus siccus in gardening and landscaping contexts. We don’t have clear data on:

  • Its common names or regional nicknames
  • Native geographic distribution
  • Preferred growing conditions
  • Wildlife or pollinator benefits
  • Landscape applications
  • USDA hardiness zones

Why This Matters for Gardeners

The scarcity of cultivation information suggests that Axonopus siccus isn’t commonly available in the nursery trade or widely used in landscaping projects. This could be due to several factors:

  • Limited geographic distribution
  • Specific habitat requirements that make cultivation challenging
  • Simply not having been evaluated for horticultural potential
  • Being overshadowed by more well-known grass species

Should You Try to Grow It?

Given the lack of available information, growing Axonopus siccus would be quite the gardening adventure. Without knowing its native range, growing requirements, or potential invasiveness, it’s difficult to recommend for most gardening situations.

If you’re interested in native grasses for your landscape, consider focusing on well-documented species native to your area. Your local native plant society or extension office can recommend grass species that are:

  • Proven to thrive in your climate
  • Known to benefit local wildlife
  • Available from reputable native plant nurseries
  • Supported by cultivation guidance

The Takeaway

Axonopus siccus serves as a reminder that the plant kingdom still holds mysteries, even in our well-connected age. While this grass might not be destined for your garden anytime soon, it highlights the importance of choosing plants with established cultivation information and known benefits to both gardeners and local ecosystems.

Sometimes the most responsible gardening choice is admitting when we simply don’t know enough about a plant to recommend it – and Axonopus siccus appears to be one of those cases.

Axonopus Siccus

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

Axonopus P. Beauv. - carpetgrass

Species

Axonopus siccus (Nees) Kuhlm.

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