I bought a marigold plant two weeks ago and it started by a beautiful bloom. However, some of the biggest flower slowly becomes brown and wilted. The leaves are curling and dried too. So I cut out the dried part.
I am not sure if it's due to overwatering, underwatering, or fungus? The other buds are okay and seems to bloom just fine. It's just quite many leaves and small branches are drying, it makes me worry. The stem is not mushy, though.
I live in Southeast Asia, which has a tropical climate and sun all year round. The plant was placed in west-facing balcony, so it receives a full sun from 1pm to 5pm. Water it once a day except during rain, so the soil is pretty moist but not flooded. I thought Marigold likes sun, because the seller put it on the open space instead of in the shade and they were fine and healthy when i bought it. I haven't changed the potting mix ever since I bought it.
Some people suggested to cut the flower, but I still left it because I wanted to get the seed out of it. But I am not sure if I can have it, looking at the flower condition.
The last time I picked the wilted flower, the seeds are underdeveloped. Could it be because no pollination was going on? There was also a fuzzy white spot (small one) which I am afraid is kind of fungus.
Anyone can give me suggestion on what's going on with it and what to do to make it healthy again?