Legalize it with the same laws, restrictions, taxes, and regulations as alcohol.
Figure that the tobacco companies already have the fields, packaging, marketing all wrapped up. It might cost them a buck and a quarter to make a pack of joints, and with the same taxes on them as alcohol, figure on $20 per pack.

It will not effect growing for personal use.... consider that you can make your own beer, wine, booze, etc for *PERSONAL USE*, but not for sale. Moon shiners only get busted because they sell the stuff and it doesn't have a tax stamp on it.

Either way, as soon as its legalized, the black market will be out of business. Do a little homework on prohibition.....just as soon as alcohol was legalized again, the speakeasies and mob control of alcohol went out the window...... Remember that Al Capone went to prison for tax evasion, not alcohol distribution or anything else.