While evergreens such as blue spruce don't require extensive pruning -- the plant doesn't grow continuously and doesn't require much maintenance -- it's best to prune blue spruce in the later winter months before the shrub's growing season.
Avoid pruning during the wet or warm season to limit the likelihood of diseases. The blue spruce tree's slow growth makes it mostly intolerant to heavy pruning. In order to promote a positive response, the blue spruce must have enough time to repair itself before entering its dormant period. Always complete this tree's pruning during the late winter or early spring months, just before the onset of its growing season.
May 29, Angel on May 31, @Darlene Littleton the blue spruce will eventually reach a height of up to 70 feet, but it is a slow growing tree. Helpful Reply. Louis Lieberman on May 29, generally trees can be trimmed all year but it's best if done at the end of winter or the very early spring before the sap starts flowing. Helpful Reply.
Prune hedges so they're wider at the base than at the top, to allow all parts to receive sunlight and prevent legginess. Renewal pruning for older or overgrown shrubs. Every year remove up to one-third of the oldest, thickest stems or trunks, taking them right down to the ground.
This will encourage the growth of new stems from the roots. Prune these shrubs in late winter or early spring before growth begins. Do not prune deciduous shrubs in late summer. Pruning shrubs in August or early September may encourage a late flush of growth. This new growth may not harden sufficiently before the arrival of cold weather and be susceptible to winter injury.
Pruning Videos. Josh shares his trimming ability with the masses!!! Sep 02, When to Prune Evergreen Shrubs. In general, prune needle-bearing evergreen shrubs in early spring, toward the end of dormancy and before the emergence of new growth.
Pruning the evergreens at this time allows plenty of time for new growth to emerge, as well as plenty of time for these new shoots to harden off before the following winter. Oct 07, Types of Blue Spruce Shrubs.
The most common blue evergreen tree or shrub in the landscape is the Colorado blue spruce (Picea pungens). The large native tree is.