North America Non-native Plant

Digitaria Diagonalis

Botanical name: Digitaria diagonalis

USDA symbol: DIDI19

Habit: grass

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

Digitaria diagonalis: An Uncommon Grass Worth Knowing About If you’ve stumbled across the name Digitaria diagonalis in your plant research, you’re likely dealing with one of the more obscure members of the vast grass family. This little-known species belongs to the Digitaria genus, which you might recognize as the home ...

Digitaria diagonalis: An Uncommon Grass Worth Knowing About

If you’ve stumbled across the name Digitaria diagonalis in your plant research, you’re likely dealing with one of the more obscure members of the vast grass family. This little-known species belongs to the Digitaria genus, which you might recognize as the home of various crabgrasses – though don’t let that family connection scare you off just yet!

What Exactly Is Digitaria diagonalis?

Digitaria diagonalis is a graminoid, which is just a fancy way of saying it’s a grass or grass-like plant. As part of the monocot family, it shares company with familiar lawn grasses, sedges, and rushes. However, unlike its more notorious crabgrass cousins that show up uninvited in suburban lawns, this particular species keeps a much lower profile.

The Mystery of Limited Information

Here’s where things get interesting – and a bit frustrating for plant enthusiasts. Digitaria diagonalis is one of those plants that seems to exist more in scientific literature than in everyday gardening conversations. The species has limited documentation regarding its:

  • Common names (if any exist)
  • Specific native range
  • Detailed growing requirements
  • Ornamental characteristics
  • Wildlife interactions

This lack of readily available information suggests it’s either extremely rare, highly localized, or simply hasn’t captured the attention of horticulturists and native plant enthusiasts.

Should You Try Growing It?

The honest answer? Probably not – at least not without doing some serious detective work first. Since we don’t have clear information about its native status, invasive potential, or even basic growing requirements, it’s not a plant you can simply order from your local nursery and pop into the ground.

If you’re determined to learn more about this species, your best bet would be to:

  • Contact botanical institutions or universities
  • Reach out to grass specialists or taxonomists
  • Check with regional herbaria that might have specimens

Better Alternatives for Your Garden

Instead of chasing after this elusive grass, consider exploring some well-documented native grasses for your region. These alternatives will give you:

  • Clear growing instructions
  • Known wildlife benefits
  • Reliable plant sources
  • Proven garden performance

Your local native plant society can point you toward grasses that will thrive in your area while supporting local ecosystems.

The Takeaway

Digitaria diagonalis represents one of those fascinating botanical mysteries – a species that exists in the scientific record but remains largely absent from practical gardening applications. While it’s natural to be curious about unusual plants, sometimes the most responsible choice is to focus on the many well-documented native species that are just waiting to transform your garden into a thriving ecosystem.

If you do happen to encounter this grass in the wild or learn more about its characteristics, consider contributing to citizen science projects that help document our understanding of lesser-known plant species. Every observation helps build the knowledge base for future plant enthusiasts!

Digitaria Diagonalis

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 diagonalis (Nees) Stapf [excluded]

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