As long as they aren't sprayed or treated with fungicides. And roses from a florist will be treated with other things to keep them from drying out. I don't use any chemicals on my roses. In my experience, if they smell good, they will taste good. Many books say to take off the white part of the petal near the base because it will be bitter, but I've never found that I needed to do that. Good luck and I'll be curious about your taste review of your roses!