Cut off dead or diseased stems with sharp pruning shears. Inspect the plant for insect infestation. Remove branches that show signs of infestation.
Cut back loose branches from the trellis or building. Boston ivy cannot reattach itself to supports.
Cut back branches that grow outside the space you have allotted for the Boston ivy plant. Cut these branches back to a main stem. Make pruning adjustments in the early spring, before new growth begins.