By now you should have your roses all pruned and ready for fertilization. Roses seem to love the desert. Watch for aphids. You can just spray with a hose to clean those little critters off your roses. Thrips will not kill your roses but will cause the bloom to be disfigured, no treatment for this. If you notice a hole at the end of canes you pruned in January, you have cane borers. Cut the cane back until you no longer see a hole in the cane. To prevent this, when you prune apply a thin coat of Elmer’s Glue or a wood glue. Fertilize with liquid fertilizer and Epsom salts (about 1/2 cup per rosebush). Water slowly and deeply to a depth of 2 feet. Use a soil probe to assure depth (available from the Master Gardeners office.)