Quick pan over operational DWC Strawberry Propagation Bench in the Kenneth Post Laboratory of Cornell University. The strawberry runners are still attached to living mother plants, which are irrigated daily with Jack’s 21-5-20 General Hydroponics Fertilizer at 150ppm N. The runners are clasped in a GrowGrip and secured in a hole in the foam board with the bottom of their crowns just touching the surface of the aerated tap water below to initiate root growth.