Pepper plant is fairly easy to grow in a pot. I grew one to fruition here in Maryland in 2 year frame. I would recommend a medium size pot at least, and give it a trellis, but it doesn't mind rewrapping. I've seen farms of black pepper where they grow up vertical poles, no other structures. They can take lower temperatures, but not for long. I agree they're extremely decorative... gives that tropical feel the way the leaves glisten and dark green.