Other than cacti, what is the easiest flower or plant to grow?

I don't have a green thumb, but love the look of plants outside and inside. Any suggestions. If possible can you provide a link that shows how the plant looks
Other than cacti, what is the easiest flower or plant to grow?
indoors - peace lily

outdoors - viburnum
Reply:If you want something to come back every year, go with perennials, tulips, daffodils, iris's, all super easy and come in a variety of colors.
Reply:Dandlions are the easiest to grow and make excellent wine when harvested.

Any of the popular annuals are easy, too.

Snapdragons;

Petunias;

buttercups;

marigolds;

jump-up-and-kiss-me;

just use Google images on your own computer for pics of each.