Native & Naturalized Plants of the Carolinas & Georgia


1445

Grass, Sedge, or Rush
Perennial

Non-native: Eurasia
Documented growing wild in GA NC SC

Common

Look for it on roadsides, in fields, waste places, per Weakley's Flora

map
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INVASIVE

This plant is causing problems in natural areas outside its native range, according to authorities such as:

Alabama Invasive Plant Council, 2012
Georgia Exotic Pest Plant Council, 2006
Kentucky Exotic Pest Plant Council, 2013
NC Department of Transportation
SC Exotic Pest Plant Council, 2014
Tennessee Exotic Pest Plant Council, 2009
US Forest Service Southern Research Station
Virginia Department of Conservation and Recreation, 2014

 

full sun

LEAVES:
Simple
Alternate, 2-ranked

FLOWER:
Spring/Summer/Fall

FRUIT:
Spring/Summer/Fall
Grain

 

TO LEARN MORE about this plant, look it up in a good book!



Spermatophytes (seed plants): Angiosperms (flowering plants): Monocots: Commelinids: Poales

WEAKLEY'S FLORA (11/30/12):
Sorghum halepense   FAMILY Poaceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Sorghum halepense   FAMILY Poaceae

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (1968) 029-88-001:
Sorghum halepense   FAMILY Poaceae

SYNONYMOUS WITH Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Sorghum halepense

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933)
Holcus halepensis

 

COMMON NAME:
Johnsongrass


Click or hover over the thumbnails to see larger pictures.

image of Sorghum halepense

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913    pnd_hoha_001_lvd

        

image of Sorghum halepense

USDA-NRCS PLANTS Database / Hitchcock, A.S. (rev. A. Chase). 1950    pnd_soha_001_lvd

        

image of Sorghum halepense

JK Marlow    jkm0307k_33

July    Greenville County    SC

Roadside

One of our most pernicious weeds, per Vascular Flora of the Carolinas.

image of Sorghum halepense

JK Marlow    jkm0407y_33

July    Greenville County    SC

Roadside

A serious weed, difficult to eradicate, per Weakley's Flora.

image of Sorghum halepense

JK Marlow    jkm080705_048

July    Swain County    NC

image of Sorghum halepense

JK Marlow    jkm080705_055

July    Swain County    NC

image of Sorghum halepense

JK Marlow    jkm080705_062

July    Swain County    NC

image of Sorghum halepense

JK Marlow    jkm080705_066

July    Swain County    NC

image of Sorghum halepense

JK Marlow    jkm140730_217

July    Greenville County    SC

Cleveland Park

It's easy not to notice the feathery stigmas of wind-pollinated grass flowers.

image of Sorghum halepense

JK Marlow    jkm140730_219

July    Greenville County    SC

Cleveland Park

image of Sorghum halepense

JK Marlow    jkm0308m_10

August    Greenville County    SC

Leaves to 24" long, 0.4-0.8" wide, developing a prominent white midvein, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.

image of Sorghum halepense

JK Marlow    s030815_ab

August    Greenville County    SC

image of Sorghum halepense

Gill Newberry    gn09_sorgham_halepense

September        

image of Sorghum halepense

Gill Newberry    gn09_sorgum_halepense_inf

September        

Open spreading panicle 15-50cm long, w numerous whorled projecting branches, per Forest Plants of the Southeast and Their Wildlife Uses.

image of Sorghum halepense

JK Marlow    jkm0309e_10a

September    Greenville County    SC

Roadside

Its panicle has a reddish color a little different from any other grass, per All About Weeds.

image of Sorghum halepense

JK Marlow    jkm0110k_09a

October    Greenville County    SC

Roadside

image of Sorghum halepense

JK Marlow    s071027_b

October    Abbeville County    SC

Field

Spikelets paired: one silky and sessile, one stalked and smooth, both w awns, per Wildflowers of Tennessee.