HOW TO GROW MARIGOLDS FROM SEED WHEN TO PLANT MARIGOLD SEEDS Direct sow Marigold seeds after all threat of frost has passed - it's recommended that you wait approximately 1-2 weeks after the final frost date. Marigolds can also be sown indoors approximately 50-60 days before your final frost. WHERE TO PLANT MARIGOLD SEEDS Marigolds are tolerant of most types of soil, and enjoy warm, Full Sun conditions. Marigolds do best in rich, well draining soil that remains moist, though once established can be somewhat drought tolerant as well. If planted in cool, or moist locations, Marigolds are susceptible to powdery mildew. Seed packets , Organic seeds , Garden seed kits , Heirloom seeds , Non-GMO seeds , Vegetable seeds , Flower seeds , Herb seeds , Seed starter kits , Bulk seeds , Fast-growing seeds , Seed planters , Annual seeds , Perennial seeds , Indoor seed kits , Seed catalog , Microgreen seeds , Wildflower seeds , Seed subscription box , Seed tray sets