In the UK, the phrase "pot plant" means "plant in a pot"; no cannabis implied unless the context specifically demands it.

Haha, thank you. My heritage is clearly given away by my phraseology :)

I'm pretty sure they meant pot plants. It's a plant, but that's in a pot, not in the ground.

In California (and likely the rest of US but I don't know), "Pot plants" exclusively refers to Marijuana in its plant form. "Potted plants" is what we call what you're describing. It's a plant, but it's been potted.

Not an unreasonable question.

http://www.bloomberg.com/news/articles/2013-02-28/silicon-va...