Pruning a blue spruce
I have a blue spruce about five feet tall. It is growing well, but at the four-foot level there is a bare space of about one foot where no branches have grown. Now it is growing a top notch above the blank space. Is there a way I can prune it to force growth in the blank space?
Pinching back new growth on candles in spring will encourage the tree to push out further new growth throughout the rest of the growing season. I would also recommend a deep root feeding in early spring to give your tree a boost. Just a note: Blue Spruce require full sun. Shading or too much moisture on any part of the plant can encourage a disease called needle cast, in which needles turn a purplish-brown and die back. Bare areas on the tree can be an early sign.