Water the soil thoroughly in the morning. Be careful not to let the water splash on surrounding rose bushes, because it can promote fungi disease like blackspot and rust. Choose a time early in the day so that the water can evaporate and not effect the other rose bushes.
Prune away the rose bush so that it is easier to lift. Be sure to place all diseased or dead leaves in a garbage bag. Left-over debris can be a healthy environment in which fungi spores can live.
Dig at least 12 inches from the base of the tree to ensure you can lift underneath the root system. Use your shovel to wiggle and expose the roots.
Cut off any stubborn roots with sharp pruners. Pull the rose bush up with thorn-proof gloves or wrap a towel around the plant.
Locate all remaining roots and dig them out. Any left-over diseased roots can spread disease or infect the next plant you grow in the planting site. Throw away or burn the rose plant immediately.