Cats are notorious for chewing on, and sometimes destroying, indoor plants. The main reason cats do this is to get vitamins that may be lacking in their normal food. Not only does this habit harm your plants, but it can also be harmful to the cat, as dozens of common household plants are hazardous to felines. A solution to this problem is to plant cat grass in your home. Cat grass provides flavor and vitamins that your cats crave and also reduces the chance of cats going after other plants.
Fill a planter with well-drained potting soil. A small planter made especially for herbs is all that is necessary.
Fill a spray bottle with water. Mist the soil with the water until it is thoroughly damp.
Sprinkle the seeds on the surface of the soil. Add enough seeds so roughly half of the total surface area is covered. Use just enough soil to cover the majority of the seeds.
Place the planter on a window sill that gets plenty of sun. If possible, choose a window sill that the cats can't get to.
Mist the soil once per day to keep it moist. In most cases, two or three squirts of water per day is enough to keep the soil moist.