Wheatgrass has long been sold in health-food stores as a wonder drink with claims of many nutritional and medicinal benefits. Growing wheatgrass at home in a windowsill can provide a steady harvest if you replant at regular intervals. While the home grower can use a mortar or pestle to grind the grass into juice, specialty wheatgrass juicers are available at most health food stores and will do a better job of converting the grass to juice.
Soak 1 to 2 tbsp. of wheatgrass seed covered in water overnight in a small bowl. Drain the water off the seed the following morning.
Fill a growing tray with 1/2 to 1 inch of potting soil. Water the soil until it is moist to the touch.
Spread the soaked wheatgrass seed over the wet soil. Cover with 1/8 inch of potting soil. Use the plant mister to wet the covering soil.
Place the planting tray in a sunny, southern or western-facing window.
Keep the soil moist as the wheatgrass germinates and grows.
Harvest the wheatgrass by cutting the grass 1/2 inch above soil level when it reaches 5 to 7 inches in height.
Process the harvested wheatgrass in a wheatgrass juicer according to the manufacturer's instructions. A manual juicer will require only that you feed the grass in the hopper and turn the handle clockwise. Electric models vary in their operation.