pruning to create dense narrow screening hedge

Questionspruning to create dense narrow screening hedge
Sue Williams Staff asked 14 years ago

I have planted griselinia in a deep raised bed created along a low wall (3ft) to provide screening from neighbours. (Final height of hedge req. 4ft ) I realise it is a vigorous grower and I do not want it bare at the base. Planted last month 18inches high should I cut back now or leave until the spring? and can I grow any ground cover in with it.