The grass is a very common plant found all around Stardew Valley. It grows on dirt and can be cut down with any tool, though the Scythe tends to be the best way to cut it down. It will grow back after an extended period of time. If you have built a Silo it can be turned into hay to feed your animals. It also can provide you with Fiber sometimes as well. It's also a way to obtain Wild Seeds. Selling grass will not make you any money.
Summer[]
The grass will grow normally.
Fall[]
Grass grows normally in the fall but will change from green to orange and yellow.
Winter[]
All grass will die, and disappear over the night. New grass will not grow until Winter is over.
Spring[]
The grass will grow normally.