I have viburnum that are 8 to 12 feet tall. I would like to cut them down to 4-6 feet tall and thin them out. What would be the best way to do this? Should I cut them down all at once or cut shoots down to the ground over a few years?
Certified GKH Gardening Expert
You can typically prune it back by a third without hurting the shrub. However, don't take more than that in one given year. If you need to cut back some more, then wait until the following year to do so. This article will help: https://www.gardeningknowhow.com/ornamental/shrubs/viburnum/viburnum-pruning.htm