Posted: 27/04/2014 at 11:55
Baywood, I can really sympathize with you as I have the same problem and the police did not help at all.
I was reluctant to react but snapped when it got worse. I knocked on their door and calmly said that I had witnesses and proof about their behaviour and have alerted the police too. They denied it all and told me that "I was hallucinating as I was a lonely old hag and made racist remarks.....".I replied by saying that they were weak bullies and that if they carried on I will "go further...." and then, despite their ranting, walked away. I must say, I was terrified but at my wits end. But, it seems to have worked and they have left me alone for a few months.
Unfortunately, despite what people say about "the law etc." it is best to avoid a confrontation as people like them never change. So maybe you could cut the plant down and try saving it by watering it copiously and see if it will shoot up again. If it does, keep it in control and do not give them a chance to aggravate the situation. Failing that, leave the area bare and see if it helps. Good luck.