Herbert A. Cook has eight colossal greenhouses off Floral Street. Here he has 17,000 carnation plants that were started from 60,000 cuttings. Cook ships between 5,000-10,000 cut carnations to Boston weekly and a total of 300,000 yearly. Nivea, a beautiful white, and Dorothy Mandell, a rose pink, are results of Cooks own cross breeding. He is constantly experimenting to create new varieties.