Mulch- don't forget to mulch your roses heavily. It helps keep those roots nice and cool. 4-6 inches of mulch on top of the rose beds makes all the difference in the world in our summer sun. Pine needles are an excellen mulch, if you are lucky and can get your hands on alfalfa hay, perhaps with the 'proceeds' from sheep, goat or horse (allow the horse proceeds to cool down and break down first) use it to mulch your roses. Roses like the alfalfa as it breaks down. You can also use leaves and bark mulch from eucalyptus or straw as mulch. Anything thats organic that is available works best.
Roses should be pruned in January- after they have finished blooming. Feeding- Roses are heavy feeders and appreciate being fed on a weekly or bi-weekly basis. A good rose food works fine, or you may use fish emulsion, 1 Tablespoon for each gallon of water, 2 gallons of the mixture per rose- except minatures- give them 1/2 gallon per plant. This may be fed until the temperatures reach into the 90-100's, then switch to Miracle Grow (or your favorite rose food)at 1/2 strength. If you use any high nitrogen fertilizer at full strength in the high temps, you can severely burn your rose roots and foliage. Fertilizing should be done in the late afternoon when the sun is setting. This will reduce the possibility of the fertilizer burning the rose foliage.