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Family: Poaceae
Mid-Atlantic bloom time: July - September
Johnson Grass is native to the Mediterranean area and is thought to have been introduced to the United States in the early 1800s. A tall perennial that grows quickly, it can quickly choke out grain crops and is resistant to glyphosate. Consequently, it is considered by farmers to be a highly noxious weed.
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4 July 2019
Manassas National Battlefield Park, Manassas, VA 
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6 July 2019
Manassas National Battlefield Park, Manassas, VA 
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6 July 2019
Manassas National Battlefield Park, Manassas, VA 
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6 July 2019
Manassas National Battlefield Park, Manassas, VA 
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4 July 2019
Manassas National Battlefield Park, Manassas, VA 
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