Answer: Marigolds need lots of sunshine in order to bloom well. If they get too much fertilizer, they will grow lots of foliage and not too many flowers. If you remove the spent flowers, your marigolds will bloom more because the plants are not using up energy to make seeds. Instead, they will redirect their energy into making more flowers. So, full sunshine, no fertilizer, water deeply when the top half-inch of soil is dry, and pinch off the faded flowers and your marigolds will be happy. Thrive in hot temperatures, so mid-summer is usually when they bloom the most. Best wishes with your marigolds!
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