I got a neighbor 3 doors down that has some spreading pretty fast now. (I live in the country.) When his Dad was alive he planted it and it's beginning to take over. The older boo is probably 30' tall but most is >20'. Last fall I cut off two other neighbors about 1/2 mile away. It's in alot of places within 3-5 miles of my house and everybody I've asked pleaded that I come back and cut more.....ANYTIME!!
It takes over a person's place as bad as Kudzu does.