Can you tell me what’s wrong with my marigolds?

Can you tell me what’s wrong with my marigolds?

This is the second time I've planted marigolds in my border. The first time I put down their demise to it being too early and too cold. This time, however, the weather is fine but they are not doing too well. The leaves and stems have turned red with some spotting and the flowers are... not happy. Sick marigold I planted a dozen plants (3 different varieties). Most were purchased but 3 I grew from seed. All are turning red and have spots. Anyone have a clue?
Gosh darn it all to heck!!

Gosh darn it all to heck!!

Yellow Leaves

Yellow Leaves

Question, Plant ID, Budding Dahlia

Question, Plant ID, Budding Dahlia

Kitchen window herb garden…

Kitchen window herb garden…

My room.

My room.

flower bed direction

flower bed direction