I don't think there are any plants that are complety dog piddle proof echokilo .You could try lavender and rosemary ..the smell of those might just put him off piddling against them .Or you could sprinkle some of those " Get off my Garden " crystals round your shrubs and that might encourage him to go somewhere else preferably where it won't do so much damage .When we had Shaney he used to have a certain "piddling post " but if he did ,on the odd occasion ,lift his leg on my shrubs I just used to douse them with water to wash it away .
There is something you can get to put in their water to neutralise the acid in the urine ..the name of which escapes me .. Dog Rock ..or something like that .



