I hate this plant. It's at the back of the garden amongst the hedge and bushes which were planted when we moved in. Every year it reappears, even though I cut it right down and it's always diseased. The nicest thing about it are the berries. The leaves always have holes in them right at the start of the season, ie early spring and, in some years passed, by the summer the leaves are nearly all eaten away. I chop it right back, but it is persistent in making a reappearance. What is it?