Yes it is. It's a warm-season grass (or a C4 grass) that is best grown in warmer climates, and is commonly used in the South as a pasture/hay grass for livestock.
Sudan-grass and its relatives are not good for horses to eat as they can cause neurological problems. Sudan-grass is related to Johnsongrass, and Sorghum-grass and any of their hybrids.
Torterra is a Grass and Ground type pokemon.
Leafeon is a Grass type pokemon.
phytoplankton
There are no grass type Pokemon underground!
What type of consumer is a grass carp
Of course, a Grass type Pokémon can defeat a Bug type Pokémon. But Grass type moves are "Not very effective" against Bug type Pokémon, meaning the power of the Grass type move is halved.
Jumpluff is a Grass and Flying type pokemon.
Shiinotic is a Grass and Fairy-type.
Dhelmise is a Ghost and Grass-type.
Grass type are weak against Ground Rock and water types. Grass type are Super Effective against Ice Bug Grass and Steel types.
Fire type has the very strongest advantage over Grass type Pokemon