The McAllen Foreign-Trade Zone (FTZ) is located south of McAllen between McAllen and Reynosa. Commissioned in 1973, it was the first inland foreign trade zone in the United States and continuously ranks among the most active FTZs in the nation.
Marigolds take around 45 to 50 days to flower after you plant seeds, so seeds sown in early April should flower by May.
Photoperiod: All marigolds are quantitative short-day plants, thought Tagetes erecta displays a response more than Tagetes patula. The critical photoperiod for Tagetes erecta is between 12.5 and 13 hours. Plants of Tagetes erecta should be grown under artificial short days starting the first 2-3 weeks after germination during late February and later.