How do i approach a neighbor whose Japanese knotweed is spreading into your garden?

Answer 1

Very politely. I would use this outline structure if you are desperate for content. You should probably customize the words to fit the scenario.

INTRO:

1. Hi _______, it's a nice day today! (or any other small talk stuff)
2. Wow! __________ (insert compliment --> you want to put them in a good mood)

FADE INTO THE MEAT:

1. I've noticed that your garden is well developed. Your plants are flourishing and well. Nice, nice.
2. I noticed you're growing some Japanese knotweed. It's a nice plant but If you could please try to contain it or border it so that it doesn't spread to my garden. That would be nice.

END IT POLITELY IF THEY AGREE

1. Thanks so much! I appreciate it.
2. ______ (insert compliment --> you want them to feel good about their decision)

IF THEY DON'T DO ANYTHING

1. Um, it would be great if you could try to prevent the plant from spreading or maybe move it to a different area, maybe?

IF THEY SAY NO

1. Alright, thanks for considering it and thinking about it. I appreciate your effort (say this in a sad sarcastic way)
2. Try to make them feel guilty so they don't forget about it.

IF THEY ARE HOSTILE AND SAY NO

1. Leave without saying a word.
2. Go to your garden and collect the knotweed for your own use. Sprinkle your neighbor's with weed killer or trample it. Leave a creepy note on old paper or wrapper and say "You were warned"

YOU MIGHT NOT WANT TO DO THE LAST ONE BECAUSE IT'S MORALLY INCORRECT