No rose bushes by my house, or anywhere i know of, also i heard citrus, i remmember seeing them on one of our orange trees all the time. But of course now that i can do something with them they are completely gone.
I have cultured aphids. I grew some fava beans (Insert Hannibal Lecter quote here) and they throved but I could not keep the beans up (Lack of time) and they petered out. I used to get lots from field sweepings. This is a great time of the year to do it.