Sassafras trees grow wild here. I've cut them down to plant other trees in my orchard, and the sassafras keeps coming back from roots. Can't hardly kill it even with round up. I bet if I jerked a piece of it up and planted it it would grow here. Where do you live? Maybe your climate isn't conducive for sassafras. It's blooming on the sides of the road here right now. Pretty yellow flowers. Roots do smell like root beer!