Photo by Melody

PlantFiles: Southern Crabgrass
Digitaria ciliaris

Family: Poaceae (poh-AY-see-ee) (Info)
Genus: Digitaria (dij-ih-TARE-ree-uh) (Info)
Species: ciliaris (sil-ee-AIR-iss) (Info)

Synonym:Digitaria adscendens
Synonym:Digitaria sanguinalis var. ciliaris
Synonym:Panicum adscendens
Synonym:Panicum ciliare
Synonym:Syntherisma marginata


under 6 in. (15 cm)
6-12 in. (15-30 cm)
12-18 in. (30-45 cm)

9-12 in. (22-30 cm)
12-15 in. (30-38 cm)
15-18 in. (38-45 cm)

Not Applicable

Sun Exposure:
Full Sun


Bloom Color:

Bloom Time:
Mid Spring
Late Spring/Early Summer


Other details:
May be a noxious weed or invasive
Self-sows freely; deadhead if you do not want volunteer seedlings next season

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:

Propagation Methods:
Unknown - Tell us

Seed Collecting:
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

Click thumbnail
to view:

By Terry
Thumbnail #1 of Digitaria ciliaris by Terry


No positives
No neutrals
2 negatives

Gardeners' Notes:

Negative alfu On Oct 11, 2011, alfu from Gainesville, FL wrote:

This grass resists mowing with my human-powered reel mower; I have to pull it out.

Negative Terry On Jun 7, 2004, Terry from Murfreesboro, TN (Zone 7a) wrote:

I once heard a person say (in all seriousness) "Ain't that a fine stand of crabgrass?" It's the only time in my life I've heard anyone say anything good about crabgrass (it's stuck with me for nearly 20 years!)

I guess you could argue that it *does* hold soil in place in otherwise barren spots, but for most of us, crabgrass is a weed, pure and simple.


This plant has been said to grow in the following regions:

Aurora, Colorado
Gainesville, Florida
Pensacola, Florida
Thonotosassa, Florida
Kansas City, Missouri
Brick, New Jersey
Neptune, New Jersey
Salisbury, North Carolina
Owasso, Oklahoma
Murfreesboro, Tennessee

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