Do snowball bushes bloom on old or new wood?

Snowball bushes, specifically the species Viburnum opulus (common snowball), typically bloom on old wood. This means that flowers develop on the growth from the previous year. It's important to prune these bushes after they bloom to avoid cutting off the buds for the next season. In contrast, some other varieties, like Viburnum plicatum, can bloom on new wood, so it's essential to know the specific type you have.