MicrogreensMicrogreens Microgreens are young, nutrient-dense versions of edible vegetables and herbs. They are the seedlings of vegetables and herbs. They are typically harvested within 1-3 weeks of germination, when they have only their seed leaves or one set of true leaves. are young, nutrient-dense versions of edible vegetables and herbs. They are the seedlings of vegetables and herbs. They are typically harvested within 1-3 weeks of germination, when they have only their seed leaves or one set of true leaves.