In my garden a plant grows that looks like marijuana. is it?

it has leaves that are grouped in like 5-7 and get larger towards the middle, like your typical marijuana. however the leaves have smooth edges, not jagged like your typical marijuana. Also this plant forms little purple buds. i do not believe it is purple haze, purple urkle, or grand daddy purp because the leaves themselves are not purple. is this some strand of marijuana?