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Slender Crabgrass

Digitaria filiformis

Last reviewed: June 2026

Slender Crabgrass (Digitaria filiformis)
Photo: (c) Scott Ward, some rights reserved (CC BY), uploaded by Scott Ward

Light

full sun

Water

medium

Size

12"–24" H × 6"–12" W

Bloom

Jun, Jul, Aug, Sep

Native to

AL, AR, CT, DE and 26 more states

Slender crabgrass is a native annual grass that forms small clumps in summer and fall. It produces delicate, finger-like seed heads and grows to about 2 feet tall before dying back in winter.

In an HOA neighborhood

Slender Crabgrass takes more care to keep looking intentional in a front yard. Maintenance level: low. Consider it for backyard or mid-zone beds rather than the street edge.

Works well in: backyard only.

  • Name includes 'crabgrass' which has negative associations
  • Annual nature creates gaps and inconsistent coverage
  • Can appear weedy and unkempt to conventional homeowners

Wildlife value

This grass provides seed for birds and small wildlife, particularly in late summer and fall when the seed heads mature.

Common questions

How much sun does Slender Crabgrass need?
Slender Crabgrass grows best in full sun conditions.
When does Slender Crabgrass bloom?
Slender Crabgrass blooms in June, July, August, and September.
Where is Slender Crabgrass native?
Slender Crabgrass (Digitaria filiformis) is native to AL, AR, CT, DE and 26 more states, per the USDA PLANTS Database and regional native plant society lists.
Is Slender Crabgrass HOA-friendly?
Slender Crabgrass takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

Ready to grow Slender Crabgrass? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.

Not sure where to start? Take the 2-minute yard quiz