Flower School New York is holding several , including a mother-daughter class on Thursday , Nov. 30 , at 4 p.m. , and classes on holiday arrangements , for parents and children 10 years old and up , on Saturday , Dec. 2 , at noon or 3 p.m. For adults , there are sessions Dec. 7 and 14 at 4 p.m . Classes are two hours and are taught by well-known Manhattan florists like Michael George and Meredith Waga , an owner of Belle Fleur .