Plant the shrub at the depth it originally grew, and water it until the soil feels evenly moist.
Layer 2 to 3 inches of mulch underneath the plant to control weeds.
Water lightly when the top inch of soil dries out, usually during the first month after planting.
Provide supplemental water only during extreme drought conditions after the first month.
Apply general purpose fertilizer in early spring. Consult the package instructions to determine the rate of application, and water well after feeding to ensure that the granules penetrate the soil.
Prune as needed throughout the year to maintain the preferred size and form. Wear thick clothing as well as protective gloves to prevent injury from the plant's sharp thorns.