Hydrangea

[Ric.ror]

I am sure I read somewhere that they should be pruned no later than 31 August but mine still has buds on
Can I leave it until the end of this month?

[woofgang]

Unless you need to make it smaller, do it in the spring. The old growth protects the spring buds from frost

[mrs_overall]

I always do mine in the spring. Just as the new shoots are showing, I trim off the old ones

[Ric.ror]

Thank you

[hammerman]

Yep...end of March for me...the dead flower heads give frost protection to the buds underneath and they can look nice as part of the winter garden.