As a microgreen, the sprouts can be harvested after about one week. The baby leaf can be harvested after about four weeks, perfect for in your salad. A lovely intense leaf. Microgreens are vegetables and herbs that are harvested early and eaten raw. They can be divided into two groups. Micro leaves: harvest both the seed leaf and the stalk or stem attached; the sprout. Baby leaves: harvest the shoots and eat the young leaf. To sow: sprinkle the seeds on the ground and cover them with a thin layer of soil, keep moist.