Q.How To Get Rid Of Knotweed
I have knotweed plants that are bout six feet tall at the edge of my lawn. What is the best way to get rid of them? Also, in Massachusetts, it is a prohibited plant but my condo association won’t help. If you know anything about who I could contact, it is much appreciated. Thank you.

Certified GKH Gardening Expert
This one is a bit difficult. Here are some articles that will help:
https://www.gardeningknowhow.com/plant-problems/weeds/knotweed-control.htm
https://www.gardeningknowhow.com/plant-problems/weeds/controlling-japanese-knotweed.htm
This link will help you to find your closest local extension service. They can help with eradication and local laws.