Grow your own tobacco?

[GWBowman]

I'm not entirely sure if it would grow well where I am. My yard is almost completely in the shade and the soil is pretty rocky. I've thought about getting some old tires and filling them with topsoil but I probably won't get that done this year. Do the seeds keep well?

I've read 2-5 years with a 10% loss per year is stored properly.