These plants are flammable and can be used as long-lasting fuel in Campfires and Fire Pits, but that is not recommended since Grass Tufts are a nonrenewable resource. When unpicked Grass Tufts are burned, they will leave behind 1 Ash and no plantable tuft. The same applies to dug-up tufts.
Because they burn easily and are usually planted very close together in a large cluster, Grass Tufts are very susceptible to Lightning strikes which occur during heavy Rain. This can be prevented by building Lightning Rods near them.