63-77 days. Gem Series signata seeds promise a stunning and exotic twist to the traditional marigold popularly grown in the United States. Gem Series seeds grow tidy 9-12" dwarfed mounds of lacy, fern-like greens covered in radiant ½" blooms of yellow, red, and sunburst. Signata marigold seeds are native to the demanding stretches of Mexico and Central America and are perfectly suited for a variety of similarly hot and challenging gardens. Gem Series marigold seeds boast some of summer's most gorgeous blooms and are a floral shop favorite to accent any seasonal arrangement, basket, or bouquet.