When to prune viburnum
Within about 3 weeks after flowers fade. Most bloom on old wood; prune after flowering (you'll trade off berries).
| Type | shrub |
|---|---|
| Blooms on | old wood |
| Bloom season | spring |
| When to prune | Within about 3 weeks after flowers fade |
| Stop | No heavy pruning in the 6–8 weeks before your first fall frost |
Avoid
Winter pruning removes flowers.
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Sources
- University of Wisconsin-Madison Extension (Wisconsin Horticulture): Pruning Deciduous Shrubs
- University of Georgia Extension: B961: Pruning Ornamental Plants in the Landscape
- Clemson Cooperative Extension HGIC: Pruning Shrubs
Summarized in our own words from public extension publications.
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