Gently remove the plant from the container and place the plant in the hole to a depth so that the soil level of the root ball is even with, or one inch below, the surface grade. Then fill up the rest of the hole with the remaining soil and gently press down. After you have filled in the hole with the soil, slowly pour about two or three gallons of water over and around the base of the plant or until it pools on top of the soil. This will keep the water from running away and allow it to soak in around the plant. The most important thing you can give your new rose is water.
Water settles the soil around the root system, and helps the roots transport nutrients to the plant.
Place mulch around the base of the plant about three inches thick. Mulch reduces moisture loss, adds organic matter, suppresses weed growth and keeps the feeder roots of your roses cool.