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.
Young marigold plants benefit from a light trimming in spring before they begin to produce flower buds. Although you don't completely cut back the plant this early in the growing season, you do pinch back the stem tips to encourage branching and further bud production.