Marigolds are somewhat prone to damping off. As a precaution, just cover the small seeds with vermiculite, water from below, and provide ventilation in the room. Space plants in the garden 30-45cm (12-18″) apart. Dwarf varieties can be spaced 15cm (6″) apart.
Pinch the growing tips to encourage branching. This prevents tall, spindly plants. Dead head regularly throughout the growing season.
French Marigolds (Tagetes patula) produce chemicals that kill soil nematodes and repel whitefly. Avoid planting them near beans. Mexican Marigolds (T. minuta) have the same effect, and may repel rabbits.
Rating: 5.0 stars out of 5 based on 11 reviews from westcoastseeds.com