Topiary

no1cml

I’d like to shape a holly bush but all the experts say you should trim twice a year, in late winter and late summer. Won’t this trim off flower buds and therefore prevent berries from forming?

Fairygirl

It would depend on the variety, and it's current size, but mainly on how you wish to topiarise/shape it 
Inevitably, you will sacrifice some flowering and fruiting if you're pruning in any way, but that's how it is, if you want topiary of any kind