You don't. You could use grass but you don't have to.
Fire and grass.
Alcohol + Grass = Absinthe
Any grass including cogon can be pulped using chemicals and once pulp, can be used for making paper without using used paper.
To make a waterproof mud you need poles, grass, cow dung and polythene paper. The grass which is usually properly woven and the polythene paper are used to make the roof waterproof.
Paper can and is made from grass, straws, cotton, bagasse, hemp etc.
Paper route, babysitting, running errands, cutting grass, doing chores.
There are several studies on axonopus compressus, also known as carabao grass, as paper. As paper, it has already been made into paper drinking straws, and packaging materials.
linen bond paper
Paper made from cogon grass typically consists of the grass itself, which is a fast-growing, fibrous plant. The main ingredients include the cellulose fibers extracted from the cogon grass, water, and sometimes additives like natural binders or fillers to enhance the paper's quality and durability. The processing involves pulping the grass to separate the fibers, which are then formed into sheets and dried to create the final paper product.
Papyrus (a type of grass). Hence the derived name 'paper'.
grass , paper and etc