Marigolds are indeed great at helping to keep bugs away! They are not hated by all bugs but certainly will help to deter some of the peskiest of pests. For example, the mortal enemy of all gardeners is the mosquito, and it just so happens that mosquitos hate marigolds!
As well as repelling mosquitos, marigolds also have a very strong odor that can deter greenflies and blackflies. These different types of flies can really damage some of your favorite plants, and so anything you can do to get rid of them is helpful!
One other positive about planting marigolds is that they look beautiful, and are a great option if you don’t want to grow herbs and veggies. What’s more, bees love them, so you can attract everyone’s favorite pollinator whilst keeping away pesky bugs!