Q.Can Knockout roses be planted in a large pot
Can Knockout roses be planted in a large flower pot or do they need to be in the ground? I have a spot near my front door that needs a pot.

They can do okay if just one is planted in a big pot with drainage holes in the bottom. I mean a good sized pot too! 20 to 24 inch diameter pot and 24 or more inches of depth/height to it. Not allowing proper drainage will cause root rot and kill the bush eventually. They do far better in the ground though in my experience.