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.
2. Spray the marigolds with the insecticide until all plant surfaces are wet. This will control sap-sucking insects such as aphids, thrips and spidermites. Repeat the treatment at 7 to 10 day intervals as needed. Kill chewing insects -- such as leaf-eating caterpillars -- by liberally spraying the marigold with a mixture of 4 teaspoons of Bacillus thuringiensis mixed with 1 gallon of water.