marigold       
noun [ C ] uk/ˈmær.ɪ.ɡəʊld/ us/ˈmer.ɪ.ɡoʊld/
 万寿菊,金盏花
a plant with bright yellow or orange flowers
  He'd been planting marigolds in the border opposite.
 Another option is the slightly lurid marigold, which flowers generously once you dead-head it.
 - More examples
 - One time she was given a holiday job in the palace gardens, pricking out marigolds.
 - In the kitchen, marigolds were used as a cheap substitute for saffron.
 - It was topped by a stone bust around which someone had placed a garland of fresh marigolds.