How to Grow Microgreens
Growing Microgreens is fun & exciting - as it only takes a week or two to have a crop. Here is an overview of the process:
Prepare your soil and trays - Microgreens grow best in a half inch of soil (more if Peas, Sunflower, Beets, Swiss Chard, Mung Beans, or Cilantro). The soil should be moist enough that if you were to squeeze a handful of it in your hand two droplets of water would come out of it but not a stream of water. Put the soil in the tray, level the soil and press into the tray with the palm of your hand.
Prepare your seeds - Seeds are measured out by weight for the various tray sizes. Here is a link for a seed density calculator: JsCalc Seed Density . Plant the seeds by sprinkling on top of the soil (Beets, Swiss Chard & Cilantro are planted under a thin layer of soil). Once seeds are sprinkled over the soil, press seeds into the soil using the palm of your hand. Then using a spray bottle, spray the seeds.
Blackout Dome - Put a blackout humidity dome over your seed tray. Every morning and every night, spray the seeds with water using a spray bottle. The seeds should germinate within 12-48 hours (Cilantro takes 7 days). Leave the blackout dome on the seeds until 24 hours after the first leaves (the Cotyledon leaves) appear or until just before the stems reach the upper height of the dome (if this happens first). For the larger seeds (Peas, Sunflower, Beets, Swiss Chard, Mung Beans, and Cilantro) invert the blackout dome on top of the seeds and put a weight on it (2 - 10 lbs depending on size of tray) until the seeds begin to germinate.
Grow under light - Remove the blackout dome and grow your microgreens under light. Every morning and night water the microgreens by bottom watering. Grow the microgreens until the first signs of the 2nd leaves & then harvest. (Harvest Pea Microgreens when they are 4" tall. Beets, Cilantro, & Basil can be grown past the first sign of the 2nd leaves).