well male plants are still fun to grow. lol if all else fails. plus i have heard that male plants have barely any thc. so yea, basically if its a male youre screwed, there really isnt any way to tell if your growing it out doors, just gotta keep growing it and hope its female.
you can tell the sex by this. once its older, (if its outside probably in fall, cause that is when it will start to flower etc.) then if its female it will get little hairs on it, at the intersections of branches and stuff, and at the top where it keeps growing. if it is a male it will get sacs. but you just gotta wait and see i guess