Weeds are weeds (and I include poison ivy/oak in this) because they grow where they are not wanted. They do this because they have a great ability to grow under a wide variety of circumstances, and to out-compete other plants in doing so. Do you really think that just being in a pot is going to faze them? read more
Yes. Weeds grow easily. Poison oak is a vine or shrub and is larger than most weeds so you would notice it earlier and pull it out. Remove weeds asap. I assume you means weeds and not marijuana. It would be foolish to try to grow poison oak as a potted plant. I don’t know much about growing marijuana. Hope this helps. read more