Why Hydrangeas Fail to Bloom After Pruning

Why Hydrangeas Fail to Bloom After Pruning

A gardener cut all old stalks back on their hydrangea and now has no blooms. They're upset and ask for help.

The Problem

Many hydrangeas (H. macrophylla, H. serrata, H. quercifolia) bloom on old wood. Cutting all stems in fall/winter removes the flower buds formed the previous summer.

Correct Pruning

• In spring, only remove dead wood.
• Cut remaining stems back to the first strong pair of leaf buds.
• Fertilize with acid-loving plant fertilizer (e.g., Holly-tone).

Identification Matters

Panicle (H. paniculata) and smooth (H. arborescens) hydrangeas bloom on new wood and can be pruned hard in spring. Know your type!