by Razi Bokhari
What is the pruning time for Hydrangeas?
Suggested Project Book
Hello Razi,
Pruning hydrangea can be confusing. It’s because it depends on the variety of hydrangea. Knowing your hydrangea type is an important factor. Looking at your leaves and blossom will help ID the variety, please look at the references below for best practice recommendations.
https://www.almanac.com/plant/hydrangeas
The timing of the pruning seem determines by the hydrangea variety according to this source.
Prune during the summer, just after the flowers fade:
Bigleaf or Florist Hydrangea (Hydrangea macrophylla)
Prune in late winter or early spring:
Hills-of-Snow or Sevenbark Hydrangea (H. arborescens ‘Grandiflora’),
Oakleaf Hydrangea (H. quercifolia)
Peegee Hydrangea (H. paniculata ‘Grandiflora’),
Tea of Heaven (H. serrata)
Prune as needed to control growth -
Climbing Hydrangea (H. anomala petiolaris)
https://www.thespruce.com/when-to-prune-hydrangeas-1403320
And another reference
http://www.finegardening.com/pruning-hydrangeas
It depends on which type of hydrangeas you want to prune. This site lists the main types and when to prune them: https://www.thespruce.com/when-to-prune-hydrangeas-1403320