Oh, my gosh! I held a ruler up to your pic (the bigger one that showed up when I clicked on the one above) and guestimated that your grandpa's image was 2cms tall and the flower was FIVE cms tall!!! That translates to fifteen and a half feet!!! WOW!!!!! Wish I had some seeds of that sucker!!
You did the math!!!! Good job!!!. And did you notice there is one right behind him too. . that was probably more than likely taken at my great~ grandfathers farm...so, maybe they had a little help with something farmie in the soil? I still think its a cool picture and I wanted to share it ...Its a mighty big one thats for sure!
BTW, I checked my SSE yearbook (the 1999 one ~ the only one I can find right now) and they have a "Giant Size" listed: "very large flower, large yield of good to eat seeds, have had some grow to 15' tall, I've been growing for years." I couldn't afford to send in my member dues for this year. ;-( Maybe next year? Is anybody here a member? Can you check this year's yearbook to see if they're still there?