Rhododendron cutting back help

[David A]

We have a lot of rhododendrons and around the drive the previous house owners didn’t keep hugely on top of them so they are protruding probably about a foot too far into the driveway.

I’d like to trim them back a good amount eg 12-18” but don’t want to lose the foliage long term and want them to get a bit more height too.

Possible? Prune in one go? Now / spring / summer ?

[David A]

OK, consensus seems to be - after flowering, hack back.

I may report back with pictures at somepoint.

Thanks all.