Chive Microgreens: Micro chives have an onion taste that can add color and flavor to any micro salad. They look like tiny scallions. Use in place of onions on a sandwich. Slow grower and more challenging. Better in soil.What are Microgreens? Microgreens are tiny edible plants, usually vegetable garden plants, that are grown in quantity and harvested while they are still juvenile plants. They are grown in a medium like soil or a hydroponic grow pad, and are usually grown and harvested at about 10 days, which is usually 7 or 8 days past the sprout stage. They are grown in trays and can be grown right on your kitchen countertop or outdoors on a porch or patio. They are used in salads, sandwiches, slaws, soups and garnishes.