OF THE CAROLINAS & GEORGIA

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

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Sorghum halepense   FAMILY Poaceae   Go to FSUS key



SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Sorghum halepense   FAMILY Poaceae

SYNONYMOUS WITH Flora of North America north of Mexico, vol. 25 (2003)

Sorghum halepense

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 029-88-001:

Sorghum halepense   FAMILY Poaceae

SYNONYMOUS WITH (ORTHOGRAPHIC VARIANT) Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)

Sorgum halepense

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

Sorghum halepense

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)

Holcus halepensis

 

COMMON NAME:
Johnsongrass


         To see larger pictures, click or hover over the thumbnails.

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

USDA / Selected Weeds of the US. 1970    swus_page_087

        

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 (Radford, Ahles, & Bell, 1968).

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 (Horn, Cathcart, Hemmerly, & Duhl, 2005).

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 (Miller & Miller, 2005).

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 (Spencer, 1940).

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 (Carman, 2005).

 

 

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Sorghum halepense   FAMILY Poaceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Sorghum halepense   FAMILY Poaceae

SYNONYMOUS WITH Flora of North America north of Mexico, vol. 25
Sorghum halepense

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 029-88-001:
Sorghum halepense   FAMILY Poaceae

SYNONYMOUS WITH (ORTHOGRAPHIC VARIANT) Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Sorgum halepense

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

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Holcus halepensis

 

Find by SCIENTIFIC NAME:

1445

Grass, Sedge, or Rush
Perennial

Habitat: Fields, pastures, roadsides, waste places, cultivated fields, per Weakley's Flora

Non-native: Eurasia

Common

map
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.


INVASIVE

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

 

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!



 


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