I have grown one crop of tobacco in my backyard garden.
I grew it last summer, plan on fermenting it this summer, will hopefully be able to smoke some by Christmas.
You are too late to start for this season. However, for next season I would recommend getting a hold of a couple different varieties / strains and planting 2 - 3 of each, see what grows best in your climate. The key is in the color curing and fermenting. Once you get quality leaf, then worry about blending.
Just a word of warning. It is not a fast or simple process. It takes a lot of space to grow and dry, as well as a lot of time. That being said, if you are willing to dedicate the love and time required, it can be a very rewarding experience.
Good luck!