Darrell Blackwelder: When is the best time for pruning?
Published 12:00 am Saturday, January 25, 2025
One the most frequently asked gardening question concerns pruning. Many ask if it’s OK to prune any time the temperature changes, particularly if there is extremely cold weather as we’ve experienced over the past few days. The answer is yes, you can prune. Contrary to popular belief, pruning can be done year-round if done correctly.
Light, judicious pruning does not kill plants; however, pruning depends on the type of plant, the bloom period and other growth factors. Light judicious pruning is not the same as topping or severely pruning trees or shrubs.
Spring-flowering shrubs may not bloom if severely pruned back in the late summer or early fall. Low-lying tree limbs can be judiciously removed now to give easy access to mowers and other outdoor yardwork. Lightly pruning maple and birch trees in the fall is actually the best time of year because these trees bleed sap severely when pruned in late winter or spring.
Severely pruning evergreen hedges should be done in late March. Prune back tall roses, but not as severely as in March to keep winter wind from damaging plants. Many types of trees and shrubs tend to send out shoots during the summer months and can be effectively pruned to keep the desired shape of the plant. For more detailed information on pruning plant materials, go to https://content.ces.ncsu.edu/pdf/general-pruning-techniques/2014-09-29/general-pruning-techniques.pdf
Darrell Blackwelder is the retired horticulture agent and director with the North Carolina Cooperative Extension Service in Rowan County. Contact him at deblackw@ncsu.edu.