May Greenhouses is a family-owned, potted plants wholesaler, serving Southern California wholesale growers, retail nurseries, distibutors, garden centers and landscapers. In 1957, Herman E. May founded May Greenhouses, which specializes in growing chrysanthemums. Herman's dream of owning a greenhouse business lives on through his family. May Greenhouses currently offers more than 54 varieties of yellow, white, lavender and bronze mums throughout the year.