According to our records, this business is located at 901 Nanticoke Ave. in Seaford (in Sussex County), Delaware 19973, the location GPS coordinates are: 38.6500499 (latitude), -75.6143936 (longitude). Growmark is categorized under Seeds and Bulbs (SIC code 5191). Current estimates show that the unit has a sales volume of $665,000 and staff of approximately 1 worker. You can contact the company by phone at (302) 629-2260.