Wheatgrass is grown for its health benefits and mineral content, which includes chlorophyll, vitamin E, selenium and phosphorus. This grass grows readily from seed and can be kept indoors. When growing wheatgrass at home, use only organic potting materials to keep it natural and pesticide-free. See your wheatgrass go from seed to seedling in one week. To ensure a continuous supply of wheatgrass in your home, have more than one tray going at all times.
Pour wheatgrass seed into your planting tray until you have an even layer of seed at the bottom of the tray. Then measure the seed in the tray by pouring it into a measuring cup. You've just learned the wheatgrass planting capacity of your seed tray; plant this amount of seed any time you want to grow wheatgrass.
Soak wheatgrass seeds overnight (for eight to 10 hours) in a bowl of cool water. Use two to three times as much water as wheatgrass seed.
Pour the water out of the bowl. Rinse the seeds under cool water. Then place the seeds back in the bowl, cover with two to three times the amount of cool water again and soak in the same manner for another eight to 10 hours.
Repeat this one more time for a total of three soaking periods for your seeds. After the end of the third period, rinse the seeds and check their root structure. The seeds should have 1/8-inch to 1/4-inch sprouted root. Now they're ready for planting.
Cover the bottom of your tray with paper towels to prevent the wheatgrass roots from poking out of drainage holes in the tray. Then fill the tray with organic potting soil, up to 1/2 inch from the top of the tray. Wet the tray until the soil becomes damp but not saturated.
Lay the sprouted wheatgrass seeds over the tray in one uniform layer to cover the tray. Occasionally, seeds may touch one another; Sprout People notes that this is okay.
Place the tray in a location where it can receive bright, indirect light, such as a windowsill. Wheatgrass dislikes bright light. Cover the tray with a lid that has tiny air holes poked into it; this prevents mold from growing in the humidity.
Spray the wheatgrass seeds with water from a spray bottle daily to keep them moist.
Remove the cover when the grass is 1 to 2 inches tall. After this point, keep the soil moist with water and allow the wheatgrass to grow. Turn the tray in the windowsill once each day so that all seeds receive the same amount of light.
Harvest the grass by cutting it with scissors when you're ready, typically when it's 6 inches or longer.