When should I trim my hydrangea bush and how much should I trim it?
Pruning bigleaf hydrangeas (macrophylla types, which are usually pink or blue flowered) in winter will remove next year's flowers. They form their flower buds the previous summer. Prune them by mid-summer to prevent blossom bud removal.
Paniculata types (Pee Gee) and arborescens types (Annabelle), both of which are usually white flowered, can be pruned in winter because they bloom on new wood.
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