What Makes Marigold Plants Grow Best?

Question

I have three plants, one in full sunlight with water only, a second in partial sunlight with plant food, and a third one with no sun light and plant food. The two flowers with plant food died after one and two weeks after I planted them. Why?

Answer 1

It is possible that the plant food was applied incorrectly or at too high a rate and this burned the roots, which then killed the plants.

The other possibility is that marigolds love sun. If they do not get enough sun, they will slowly sicken and die.