Adult use marijuana grows, testing, manufacturing slated for Biddeford industrial zones Second reading of ordinance amendments to allow in I-1, 2 and 3 zones is Jan. 19. Biddeford zoning ordinance to allow adult use and medical use marijuana cultivation, testing, and Biddeford councilors will hold a second reading of a proposal to allow adult use marijuana along with medical use marijuana to be grown, tested and manufactured in the I 1, 2 and 3 zones as conditional uses on Jan. 19. AP File Photo/Robert F. Bukaty manufacturing in the Industrial 1, 2 and 3 zones as conditional uses for Jan. 19. While the proposal allows medical use retail stores in the three zones as a conditional use, adult use retail stores would be prohibited throughout the city.