Marigolds act as the pest police. They repel garden attackers without the chemicals and are helpful in keeping away carrot flies. They are also tasty in salads. They are known for taking over, but I have not had an issue with this. Look for the scented variety when selecting marigolds for your garden.
Marigolds like soil that is not too damp, so they got planted near the thyme in the raised garden. Water at the base and let dry between waterings (except in summer). Well-drained soil is preferable. For reasons unknown to me, my marigolds suddenly wilted and died. I have planted new marigolds from seeds and am waiting to see how they do. Intriguingly, the seed packet says they are best planted when there is a low pressure system.
Characteristics: Pest police; Prefer well-drained soil
Water: Water at base; Let dry between waterings (except summer)
Sun: Can survive hot summers
Companions: Just about everyone
Enemies: Beans; Cabbage