I have grown it for years. Have never noticed a problem with it. Have really not noticed any pests to bother it here in West Tennessee. It in itself, can be a pest, as it self seeds and you will always have it, but it is SO beautiful! Just plant it somewhere that you really don't care if it covers that area up. You could just make a small bed with an arch, arbor, trellis or some other support just for it. In no time at all it will cover it and reward you with masses of blooms till frost. I have never noticed fragrance, but strongly feel the hummers are attracted by the brilliant red color, red is all I have. Wish I had some pink & white. But they will devour them!