Pink Summercicle Radish Microgreens Seeds. Non GMO. Microgreens. Raphanus sativus. Pink Summercicle radish is an easy 8-12 day indoor microgreen crop that boasts all the same bold, spicy flavors as fully matured garden radish. Radish microgreen seeds can be started indoors year round and able to be grown in soil and hydroponically. About 3,415 seeds per OZ.