I was pretty much under the impression that tobacco plants looked like cabbage or something. Maybe I should try growing a few.
It's easily dwarfed, both by breeding and by close spacing. With 24" spacing, I was getting 6-7' tall plants with leaves as big as 12x24".
Flowers range from white to pink or purple, depending on breed. Leaves will be anywhere from dark green to a light yellow-green. They will yellow and then may go deep brown and still supple (which some growers will smoke or chew directly from the plant - it's not bad, but won't keep past a day or two without curing) or dry out and rot depending on environment.
This grower has some insect damage, but if you're not using the leaves, you can spray with whatever to prevent that.