Question
When should I trim back my hydrangeas? I live in Newport, RI.

Answer
Kathy,

It depends on what kind of hydrangea you have.  

Grandiflora, PeeGee, and Annebelle hydrangea bloom on new growth so these would be pruned in early spring before flowering.

Oakleaf, bigleaf, nikko blue bloom on year old growth.  These would be pruned after flowering.  

Good luck

Gary