North America Non-native Plant

Crabgrass

Botanical name: Digitaria ×umfolozi

USDA symbol: DIUM2

Habit: grass

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

Crabgrass: The Mystery of Digitaria ×umfolozi When it comes to crabgrass, most gardeners immediately think of the common lawn weeds that pop up uninvited every summer. But Digitaria ×umfolozi presents us with quite the botanical puzzle – a grass species that’s more mystery than certainty in the gardening world. What ...

Crabgrass: The Mystery of Digitaria ×umfolozi

When it comes to crabgrass, most gardeners immediately think of the common lawn weeds that pop up uninvited every summer. But Digitaria ×umfolozi presents us with quite the botanical puzzle – a grass species that’s more mystery than certainty in the gardening world.

What We Know (And What We Don’t)

Digitaria ×umfolozi falls into the crabgrass family, and like its relatives, it’s a grass or grass-like plant. The × symbol in its name suggests it’s a hybrid, and umfolozi likely references the Umfolozi region of South Africa. However, here’s where things get interesting – reliable information about this particular species is remarkably scarce.

What we can say with confidence is that it belongs to the Digitaria genus, which means it shares characteristics with other crabgrasses: typically annual or perennial grasses with finger-like seed heads and a tendency to spread.

Geographic Distribution and Native Status

The geographic distribution and native status of Digitaria ×umfolozi remain unclear from available botanical sources. This uncertainty makes it difficult to provide definitive guidance about where it naturally occurs or whether it’s appropriate for specific regions.

Should You Plant It?

Here’s where we need to pump the brakes a bit. Given the limited information available about this specific species and the general reputation of Digitaria species for aggressive spreading, we’d recommend extreme caution. Many crabgrass species are considered weedy or invasive, and without clear data on this particular hybrid’s behavior, it’s hard to give it a green light for garden use.

Better Alternatives for Your Garden

Instead of gambling with an unknown quantity, consider these well-documented native grass alternatives:

  • Buffalo grass (Poaceae family natives) for lawn areas
  • Native sedges for naturalized areas
  • Regional bunch grasses for prairie or meadow gardens
  • Native rushes for wet areas

Growing Conditions (If You Proceed)

Since specific growing requirements for Digitaria ×umfolozi aren’t well-documented, we can only extrapolate from other Digitaria species, which typically prefer:

  • Full sun conditions
  • Well-drained to moderately moist soils
  • Warm season growth patterns
  • Annual or short-lived perennial lifecycle

The Bottom Line

Digitaria ×umfolozi remains something of an enigma in the plant world. Without clear information about its invasive potential, growing requirements, or even confirmed existence in cultivation, it’s difficult to recommend it for garden use. When in doubt, it’s always better to choose well-documented native plants that will support local ecosystems without risk.

If you’re drawn to grass-like plants for your landscape, consult with local native plant societies or extension services to find species that are both beautiful and ecologically appropriate for your specific region.

Crabgrass

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 ×umfolozi D.W. Hall - crabgrass

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