Moisten the soil as necessary and avoid over watering. The microgreens should be ready to harvest in 10 days to two weeks once the true leaves (not the seed leaves) begin to sprout. Take a scissor and snip the microgreens slightly above the soil. Unfortunately, the microgreens won’t regrow after an initial harvest. To grow more, you will need new seed and soil.
For an easier solution to growing microgreens, you can also buy microgreen kits that take most of the work out for you. These kits generally include seed packets, compostable grow trays, soil discs and tray covers. All you do is water each day until the microgreens reach their desired length. Many big box stores, such as Lowe’s and Home Depot, now sell microgreen kits.