Japanese Fatsia

As the shrub ages, occasionally remove any stems which have become bare and straggly. New shoots will quickly reappear from the base to take their place.

Prune to the desired height and shape (no special techniques required) each year in late Spring. Overgrown plants can be pruned to less than half their height and width and will soon grow back

https://www.monrovia.com/plant-catalog/plants/1195/japanese-aralia/