hydranga petriolis

see earlier answer no need to prune ets.

My neighbour has one that has reached the gutters at the top of the house and it has stretched across the back of our two houses. Last week he decided it was time for a serious haircut and cut it down to almost halfway. He does it about this time each year now that it has finished flowering and it grows back very well.

It must be a very happy plant to grow like that.
Most Hydrangas are pruned in March to give some frost protection.
Hydranga petriolis no need to prune but over long shoots can be cut back immediately after flowering

Lucky anyone who can get their 'petiolaris' to flower...:<(

I think it took about 4 years for this one to flower and now it romps away every year.

mine flowered after the second year it was in and is now long overdue for a trim. I have lost a window to it. I have mine in quite a shady spot so I wonder if that helps.

Sulpahte of Potash Ive just learnt makes them flower see earlier question on this subject - Boodaloo 30 Aug