Microgreens, refers to seeds that are grown for probably a minimum of 2 weeks in a medium such as Vermiculite, Coco fibre, Soil and you just harvest the leaves. Can also refer to plants grown a little bit longer such as Cress, Rocket, Coriander. The best 2 week microgreens to grow are, Snow Pea, Radish, Kale and Broccoli.