Need help pruning a potato bush
We have a potato bush (Paraguay nightshade) in our Arizona yard. Since we like a natural look, we have let this bush grow for two years and it has definitely got out of bounds.
How severely can I prune it and is there any way I can do this without it ending up as a rounded ball which would not look good in a natural setting. It's a beautiful bush with lovely flowers. Also, when is it best to prune this bush since it tends to flower year 'round?