I bought this marigold plant with some flower buds a few weeks ago. During the first few days, the leaves were fine. Sadly, once the flower bloomed, the leaves started to look like this. I do not know why this happened and how to solve the problem.
From the beginning I used the tip of my finger to press and understand how dry the soil was, before watering it. Then I got a suggestion from a friend to place it away from the sun, so I did that, without any success. During that time the soil became a little dry so I watered it.
I never grew marigold plants before, so I lack experience. If someone provides a helpful suggestion along with an explanation, I would really appreciate that!