Examine the yaupon holly in the early spring and identify any brown or weather-damaged foliage or branches. Cut problem foliage back to a healthy leaf node. Remove broken or dead branches at their base. Make your pruning cut just outside the branch bark collar.
Trim yaupon holly in the spring to control its size and shape. Remove up to one-third of the length of each branch.
Sheer the yaupon holly during the spring or summer, while it is actively growing, to encourage more vigorous growth. Trim 3 inches off the length of each branch, cutting the branch tips back to a healthy leaf node.
Keep an eye on the base of the yaupon holly and promptly remove any sprouts that form. These sprouts give the holly an unruly look, and they divert valuable moisture and nutrients from the main shrub.