Hi I'm Stan DeFreitas, Mr. Green Thumb. How do you keep roses free of some of the bug problems and insect and fungal problems? Overview of the plant. Roses are kind of a magnet like, magnet to metal. They have a lot of insect and disease problems and you are going to have to be prepared to do good sanitation of them. Remember that you are going to plant it on a bright sunny spot and when you do see some signs of problems and you will like black spots, some of the mildew problems, be prepared to spray them with a good fungicide. Also when you first plant them plant them on early morning sunlight if you can. Why your early morning sunlight? Because the leaves will dry off sooner. If they are in real dead shade for half the day you increase that chance of mildew, black spot, and other fungal problems so plant them in a bright sunny spot, make sure they get six hours of bright sun a day and be prepared to treat them either with some of the plant foods that have some of the insecticide and fungicide in them, some of the systemics and/or be prepared to take your sprayer and spray them on a pretty regular basis. If you do that you should be able to keep these plants nice and healthy. Also remember pick off those bad leaves and if you do that you'll have a good looking plant for many many years. For askmrgreenthumb.com, I'm Stan DeFreitas.