Don Horowitz, a co-owner of Wittendale’s Florist and Greenhouses on Newtown Lane in East Hampton, took more than a wealth of knowledge home from the Cornell Floriculture Field Day, held Aug. 13 at the Bluegrass Lane Horticultural Research Facility in Ithaca, N.Y. He also brought back a medal, awarded for his winning entry in the Kathy Pufahl Container Design Competition.