I'm not sure about garden pests eating tobacco but I imagine they get a quick rush from that niccotine. I found this little worm eating the center portion of one of my tobacco plants. I just picked him off and flung him into the woods. I planted the 5 tobacco plants outdoors in Wisconsin 3 weeks ago and they seems to be taking off. Some better than others. I'm anxious to see how big they get. I put down wood ashes before I planted them and once planted I put some 10-10-10 fertilizer around the plants. I'll do that once a month since tobacco is a heavy nutrient eater. Below are some other photos of the plants.