How Long To Grow Marigolds From Seeds. Marigolds take around 45 to 50 days to flower after you plant seeds, so seeds sown in early april should flower in may. Broadcast seeds over an empty bed and cover with a thin layer of potting mix.
So the exact time to bloom marigold after planting may vary. Seeds that are planted in the soil safely (assuming you wait until after the last frost) can germinate and being to sprout within a few weeks! The plants will bloom in about 8 weeks.
Broadcast seeds over an empty bed and cover with a thin layer of potting mix.
Depending on the variety, marigold plants can grow 8 to 40 inches tall, and develop blooms that can range in size from 1 to 5 inches. During the summer months marigolds tend to withstand the heat well. They are dark on one end and light on the other. Depending on the variety, marigold plants can grow 8 to 40 inches tall, and develop blooms that can range in size from 1 to 5 inches.