In the area where i picked and pruned my buds last year, there are now hundreds of little plants growin. My quesiton is this. Where i live it freezes zone 5 and the seeds obviously survived teh winter being on the ground. Does this mean that the seeds are a possible cross breed with local hemp or can seeds of real MJ, good mj, survive a snowy cold winter. And.. If they can then how come good strains of MJ don't grow in patches that just come up each year on there own and then spread throughut the land on there own.