WHAT KIND OF FLOWERS TO PLANT IN A CONTAINER
WE HAVE A CONCRETE CONTAINER IN FRONT OF WHERE I WORK AND WE WANT TO PLANT SOMETHING THAT WILL COME BACK EACH YEAR.
Certified GKH Gardening Expert
Here are some ideas. The perennials will come back each year, the annuals won't. (However some annuals reseed.)
You didn't mention whether your container is in full sun or shade, so I'm sending links that cover both.