Eating grass is natural for animals such as domesticated dogs and cats and they will instinctively eat grass when ill or injured. Grass provides nutrients that keep the digestive system healthy, therefore aiding in stomach upsets and aiding in the healing process. Providing fresh wheat grass for your animals is far healthier than them eating lawn grass that can contain harmful chemicals.
Use 6 cups of wheat grass seed for an 11- by 12-inch seed tray. Soak the seeds in a glass mason jar filled with clean water; shake to make sure all the seeds are covered with water. Set aside for about 12 hours or overnight.
Put two layers of paper towels into a colander and pour the soaked seeds into the paper towels to drain. Let sit in the colander for another 12 hours to drain well.
Fill a seed tray to within 1-inch from the top with organic potting soil. Be sure the seed tray has drainage holes. Dampen the soil using a spray bottle filled with water.
Scatter the soaked seeds over the soil in the seed tray, spreading out evenly. Do not be concerned about the seeds touching one another. Pat the seeds down gently into the soil no more than an eighth inch, but do not cover completely with the soil. Mist the seeds with your spray bottle just to moisten.
Place another seed tray upside down over the seeds. The seed tray should also have drainage holes that will allow for good air circulation. Sit in a dark room away from all drafts including air vents or windows.
Remove the top tray after about five days when the sprouts are approximately 1 1/2 inches high. Sit the tray in front of a south-facing window where it will receive indirect sunlight for at least four to six hours daily. Keep the soil moist daily by misting with the spray bottle.
Harvest your wheat grass when it reaches 6 to 8 inches high about 10 to 14 days after planting. Cut the grass close to the soil, leaving approximately a quarter inch high of grass. Add the wheat grass to your animal's food or place the tray outside for them to eat out of directly.