Answer: they should create an organization and negotiate but refusal to adhere uprooting should be reported to necessary authorities, to avoid being accused of it later on.
Step-by-step explanation:
The neighbors should try to reach out to each other and try understanding themselves. In doing so, neighbor A should create an try letting the other individual on why he's not convenient with the plant that's been grown in the environment, and would love it uprooted. Negligence of the complain should make the neighbor take up action against it to avoid been caught up by the law.