Flowers can be romantic if the flowers chosen have sentimental or symbolic meaning.
I'm not a flower person but when I got flowers he actually went all over the place trying to find a particular arrangement. He didn't just call a place or go on a website and put in his credit card info. So I made sure I cherished his gift from the heart because it went through a lot to do it.
When they died, I did the "potpourri" thing.