"Stuart Noble" wrote:
There seems to be a lot of conflicting advice about winter pruning of
mophead hydrangeas. Am I right in thinking that cutting all the stems back
by half in Feb will mean no blooms this year? Do the flowers only form at
the ends of last year's stems?
Confused. Thanks for any advice

Last years flower heads should be removed during late March and early
April, after any spring frost.
Dead-head by cutting away last years blooms together with the
flowering stalk down to the uppermost pair of new buds.
If your dead-headed hydrangeas are frost damaged after pruning,
just remove any blackened growth down to the next pair
of healthy buds and don't worry, your plants will recover.

MikeCT