A fertilizer with systemic insecticide will give your plant the nutrients it needs and some degree of protection from pests. Never feed after Labor Day because the new growth will not have time to harden off before winter sets in. Additional feedings of a water soluble fertilizer during the season will perk up your plants. Most of all, roses need water. Be sure to mulch the soil to conserve moisture and keep the weeds to a minimum.
Any organic mulch is satisfactory.
We recommend having your soil pH tested by the county extension office. Roses thrive best when the pH is between 6.5 and 7.3.