If your plant has lots of stems (lets say 12 for this) you can perform what is called a stair step prune. Select stems randomly through the bush to make it look natural of course. Cut a quarter (4) of the stems (especially the oldest) almost to the ground. the next random selection (4) to half back and the next quarter only a third to a quarter. Leave the last four un-pruned.

Alternatively, simply remove the oldest right back leaving younger shorter canes.

Being related to Berberis and Mahonia, they re-shoot quite happily from this heavy pruning. Also by leaving at least a quarter (first method) of the stems, you ensure you still get flowers.

Great pruning advice, Fractal - but I must tease you about your maths! LOL. Check it out........;-)))))))

Not sure he's caught on yet Barbara :0))))

Maybe he's keeping his head down! LOL.

seems so! LOL

Ha ha ha!!!! Yes Spritz..............I am an eegit sometimes Lol :-)

No, just at work :-) I hold my hands up :-))))

LOL. I'm glad you could see the funny side of it, Fractal! ;-))