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.
While you can buy marigold plants at your local garden nursery, you can also grow your own marigold seeds into plants much more cheaply. In order for your marigolds to be ready for planting outdoors in the spring, you will need to start growing marigolds from seed indoors about 50 to 60 days before the last frost date.