|Bonanza Series Marigolds produce double flowerheads in yellow, orange and mahogany, or any combination. In general, marigolds are robust, trouble free plants which branch vigorously. Leaves are finely divided and dark green, to 4 inches. More compact than African types. Yellow to rich maroon blooms from early summer until frost. Single or double blooms, may be bi-colored. Smaller blooms than African types. Great for edging and containers. Especially useful as a natural insect repellant in the vegetable or herb garden. Remove spent flowers to encourage extended bloom period and to keep plants compact.