The robust common marigold (Tagetes erecta) is an annual that blooms from summer through fall with flowers in shades of gold, yellow, cream and white. The ferny foliage is highly aromatic, and the plant reaches 3 to 4 feet tall and 2 feet wide. Rarely bothered by pests, this vigorous plant is often used in the garden to repel insect invaders.
Provide a full-sun location, good drainage and regular water. Avoid overhead watering, as the moisture causes the large flower-heads to droop and break.