Grass is a living plant that produces pure oxygen. Lawns and parks are the most common places that grass is grown, but grass does not have to be limited to the outdoors. Given proper conditions, some varieties of grass grow and thrive indoors.
Ensure the flower pot has a drainage hole. If not, use a drill with a masonry bit to drill a 1/2-inch hole in the bottom to allow for drainage.
Fill the flower pot with potting soil. Do not tamp down or pack tightly so fine grass roots will break through the soil.
Sprinkle rye grass seed on top of the soil. Do this as evenly as possible so grass will grow evenly.
Place a thin layer of potting soil on top of the rye grass seeds. Water lightly using a tablespoon to avoid over-watering.
Place the flower pot in a sunny window or under overhead lighting. The grass seeds will germinate in less than a week. Water the soil when it feels dry to the touch.
Use a liquid fertilizer every other week beginning two weeks after the seeds germinate. Clip the grass with scissors to maintain the size and shape.