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:

 

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, Johnsongrass

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

        

image of Sorghum halepense, Johnsongrass

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

        

image of Sorghum halepense, Johnsongrass

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, Johnsongrass

JK Marlow    jkm0407y_33

July    Greenville County    SC

Roadside

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

image of Sorghum halepense, Johnsongrass

JK Marlow    jkm080705_048

July    Swain County    NC

image of Sorghum halepense, Johnsongrass

JK Marlow    jkm080705_055

July    Swain County    NC

image of Sorghum halepense, Johnsongrass

JK Marlow    jkm080705_062

July    Swain County    NC

image of Sorghum halepense, Johnsongrass

JK Marlow    jkm080705_066

July    Swain County    NC

image of Sorghum halepense, Johnsongrass

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, Johnsongrass

JK Marlow    jkm140730_219

July    Greenville County    SC

Cleveland Park

image of Sorghum halepense, Johnsongrass

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, Johnsongrass

JK Marlow    s030815_ab

August    Greenville County    SC

image of Sorghum halepense, Johnsongrass

Gill Newberry    gn09_sorgham_halepense

September        

image of Sorghum halepense, Johnsongrass

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, Johnsongrass

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, Johnsongrass

JK Marlow    jkm0110k_09a

October    Greenville County    SC

Roadside

image of Sorghum halepense, Johnsongrass

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.