North America Non-native Plant

Digitaria Phaeothrix

Botanical name: Digitaria phaeothrix

USDA symbol: DIPH4

Habit: grass

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

Digitaria phaeothrix: The Mystery Grass You’ve Probably Never Heard Of If you’ve stumbled across the name Digitaria phaeothrix in your botanical wanderings, you’re not alone in scratching your head. This enigmatic member of the grass family (Poaceae) is one of those plants that seems to exist more in scientific literature ...

Digitaria phaeothrix: The Mystery Grass You’ve Probably Never Heard Of

If you’ve stumbled across the name Digitaria phaeothrix in your botanical wanderings, you’re not alone in scratching your head. This enigmatic member of the grass family (Poaceae) is one of those plants that seems to exist more in scientific literature than in our everyday gardening conversations.

What We Know (And What We Don’t)

Digitaria phaeothrix belongs to the Digitaria genus, which includes the more familiar crabgrasses that many gardeners know all too well. However, unlike its notorious relatives, this particular species remains something of a botanical mystery. As a graminoid plant, it shares the basic grass-like characteristics we’d expect—linear leaves, fibrous roots, and that unmistakable grass growth pattern.

The frustrating truth is that reliable information about this species is remarkably scarce. We don’t have a widely accepted common name for it, and details about its native range, appearance, and growing habits remain elusive in standard horticultural references.

Geographic Distribution

The geographic distribution of Digitaria phaeothrix is not well documented in readily available sources, which may indicate it has a very limited range or is found in regions that haven’t been extensively studied from a horticultural perspective.

Should You Try to Grow It?

Here’s where things get interesting—and a bit complicated. Without clear information about this plant’s native status, invasive potential, or basic growing requirements, it’s difficult to make a strong recommendation either way. If you’re considering this plant, here are some things to keep in mind:

  • The lack of available information might indicate it’s not suitable for typical garden conditions
  • It could be a rare species that requires specialized growing conditions
  • Without knowing its native range, we can’t assess its ecological appropriateness for your area

A More Practical Approach

If you’re drawn to the idea of incorporating native grasses into your landscape (which is always a fantastic choice!), consider exploring well-documented alternatives in the Digitaria genus or other native grasses in your region. Your local native plant society or extension service can point you toward grass species that will thrive in your area while supporting local wildlife.

Some regions have wonderful native Digitaria species that provide food for birds, habitat for beneficial insects, and that lovely, naturalistic texture that ornamental grasses bring to a garden design.

The Bottom Line

Digitaria phaeothrix remains something of a botanical enigma—a reminder that there’s still so much we don’t know about the plant kingdom, even in well-studied families like the grasses. While it’s tempting to want to grow every interesting plant we encounter, sometimes the most responsible approach is to focus on the native species we understand well and can grow successfully.

If you’re specifically interested in this plant for research purposes or have encountered it in a scientific context, consulting with botanical specialists or herbarium records would be your best bet for more detailed information.

Digitaria Phaeothrix

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

Digitaria Haller - crabgrass

Species

Digitaria phaeothrix (Trin.) Parodi [excluded]

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