The Dwarf Alberta spruce does not need to be pruned. However, these trees can be pruned in late winter or early spring if desired. Pruning is occasionally done to encourage a young tree to become bushier or to encourage a more desirable shape in an older tree.
Clip off lateral and side branch tips just after a growth bud to encourage the bud to grow. The new growth will fill in open spaces in the tree's shape. To encourage a more conical shape, clip off no more than 3 inches of the tips of branches as needed. To prevent the tree from getting taller or wider than desired, snip off 1/2 to 1 inch of the ends of the lateral branches.