Arkansas Forages Database
                  
                  Johnsongrass
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About Johnsongrass
- Warm-season perennial grass.
 - Found statewide;.
 - Readily grazed and productive.
 - Is often a weedy invader in other forages.
 - Can cause prussic acid poisoning when wilted from frost or drought.
 - Can accumulate toxic levels of nitrate if over-fertilized with nitrogen or litter.