I'm planning to pour salt on my neighbor's flower bed.
Why would you pour salt on their flower bed?
I want to teach them a lesson.
Going out of your way to harm your neighbors flowers is really obnoxious. If you're trying to prove something, using your neighbors isn't the best way to go about doing that, you should find alternatives that don't involve harming others or their possessions. If you attempt to destroy your neighbors flowers that can result in them getting very angry at you.
I don't feel like having this discussion anymore.
I'm just saying it's wrong to destroy someone else's property. You should just talk to your neighbors if you have some kind of problem with them.