Columbus grass (Sorghum x almun)
Description: Hybrid between Grain sorghum (S. bicolor) and Johnsongrass (S. halepense) that grows 3'-8' in height.
Life Cycle: Perennial grass
Habitat: Fields, ditches, canals and roadsides
Leaves: Flat with sandpaper feel. Blades are 0.5-1.5 in. wide by 18-32 in. long
Flower: 6-24 in. long, spreading branches
Fruit: Seeds 0.25-0.4 in. long and smooth
Root: Numerous short, thick, scaly underground runners
The problem is…Columbus grass has the potential to harbor diseases and insect pests of sorghum, maize and sugar cane