Weed profile: Johnson grass
Johnson grass
Johnson grass
Sorghum halapense
Johnson grass is a serious weed in most parts of the world. It is a summer growing perennial sorghum which grows up to two metres tall.
Johnson grass can be spread by seeds through contaminated hay, grain and seed and by rhizomes by cultivation and roadside grading. It invades cropping land, is a host of crop pests and diseases, is a contaminant of seed crops, is a safety hazard along roadsides and can be toxic to livestock.
Status
- Declared in NSW under the Noxious Weeds Act 1993 (view details)