Johnson grass is a large NON-NATIVE grass. stems erect, to 8 ft. tall; leaf blades long, flat, midrib white, to 2 ft. long, to 3/4 in.
Johnson grass (Sorghum halepense) is sometimes regarded as an environmental weed in New South Wales and Victoria. It was recently listed as a priority environmental weed in two Natural Resource Management regions.
infestation (Photo: Sheldon Navie) ...
Johnson grass Sorghum halepense (L.) Pers. (Category 2)
Jointed cactus Opuntia aurantiaca Lindl. (Category 1)
Kahili ginger lily Hedychium gardnerianum (Category 1)
Kangaroo wattle Acacia paradoxa DC. (Category 1)
Kariba weed Salvinia molesta D.S.
Common names: Johnsongrass, Johnson grass, Aleppo grass, Aleppo milletgrass
Native To: Mediterranean Region
Date of U.S. Introduction: 1830 ...
Johnson grass (S. halapense), a perennial native to the Mediterranean that is similar to Sudan grass, is naturalized in the United States, especially in the Southwest. It is a noxious weed in cultivated fields but is also used as a forage crop.
William Johnson traveled to South Carolina and acquired seeds of Governor Mean's grass and took it to his bottomland farm near Selma. Johnson freely shared seeds and, in a kind of thankless notoriety, the name Johnson Grass came into common usage ...
Johnson grass Sorghum halepense
jointed charlock Raphanus raphanistrum
jointed goatgrass Aegilops cylindrica
juniper-berry Citharexylum caudatum
kahili flower, spider flower Grevillea banksii
Kahili gingerlily Hedychium gardnerianum ...
 See also: Grass, Sorghum, Guinea, Cotton, May
  
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