Lavender and roses are the first ones that come to mind. I think they'll grow just about anywhere.
What are some wonderfully fragrant, yet hardy and easy-to-grow, flowers you'd recommend for perfumery? I'm in central Ohio, by the way.
I think lavender is very easy to grow, so I agree with Doc Elly. You might also try sage and rosemary, though these are more herbs and less "flowers." (Both sage and rosemary do produce flowers...)
"There is no accessory greater, nor more intimate, than scent." --Tim Gunn