Just a beautiful photo of your Rose of Sharon. I like your form so much that now I'm considering turning mine into a standard by trimming off all the lower branches so that it appears to be a "tree" rather than a bush. Very pretty!!
Cobalt...Better late than never I guess lol, but I recall hearing some time ago that Rose of Sharon just do not do (flower) well on the East Coast. I forget the reasoning, but I believe it may have been either the colder winter temps as opposed to Southern Ontario's and/or the salty spray of the ocean. I believe I heard this info on one of HGTV's Kathy Renwald's gardening shows. You may be able to pull-up info from this show by going to hgtv.ca Good luck & at worst, you have a lush green shrub & that's not so bad!!