Either buy an organic weedkiller you can mix up and put in a tank sprayer or pour boiling water on them.

Did you talk to the neighbour about this? I have a similar problem because the neighbour lost his house,,,Now the bank needs to clean. If your neighbour doesn't want to clean, than you can definitely pour some boiling water or spray some alcohol

If you tried talking to your neighbors and that doesn't work, check your local ordinances if you have something in it that pertains to Homeowners "Duty to Cut Weeds and Grasses"

The ordinance would have a similar wording i.e Every owner, possessor or occupier property or land shall remove, cut,
or cause to be removed, all weeds and grasses and effectively prevent such weeds, shrubs or
plants from spreading to adjoining property during
the usual growing season. Weeds and grasses referred to herein shall not be allowed to grow
in excess of 6" (It's usually 6") in height.

Most towns have such ordinances in place because of health and fire safety reasons. Health department also handles this complaints because if you don't maintain property and have tall grass and weeds, all kinds of rodents, etc use tall grasses to build theirs homes, and Fire department also handles this sometimes, because tall grasses pose a fire hazard, so most likely you have the same ordinances.

Good luck

Can you sue them because of there ivy just going into my fence and messing up my fence i in some parts. Are bent and open. Because the ivy roots are so. Thick. I’m tired of cleansing. And I need to put up with three house it’s too much. Work for me plus all the ivy goes into my green then I have no space. For me can any one give me a suggestions pls im also 62 yrs old it’s not fair I’m getting. Tired. They dont listen today for the first time I’m so tired of that I got on a chair and was able to push the ivy way from the fence and now my back. Is hurting from all that work. That shouldnt be my work

I have no idea where to begin, our neighbors weeds cover the window in their backyard and front isn't far behind. They mow their lawn but haven't weeded in probably close to 3yrs. If it isn't in our yard, but it is an eyesore when we are in our yard, how or should we say something?

@patti knotts Have you considered putting up a fence if it bothers you so much?

We have but didn't want to block our view of the woods. I know..can't have it both ways!

Exactly how do you approach the neighbor? How does that conversation go? When are you going to clear the weeds? Do you know you haveca weed jungle? Sseriously. How do you start and maintain that conversation to achieve results?

Their CLF is also an eyesore and is likely lowering their property value and maybe yours. If local regulations allow you to hide the CLF behind a nice new fence, then you can eliminate a lot of the issue.

@patti knotts TBH, I don't think it looks that bad, but then, I like the "natural" look (as long as the growth isn't poison ivy!) A neighbor of mine let their yard get that way; turns out the couple who owned the property were physically feeble, elderly, and didn't have the money to hire a landscaper. We all pitched in and did their backyard. Everyone benefited, and they were beyond grateful. Just a suggestion. :)

It is usually best if we have established a friendly relationship with our neighbors. If your neighbor feels comfortable calling you to get a cup of flour, to pick up packages when they are away or for a referral for a handyman or tradesman, it is easy to go to them and find out if they know their weeds are out of control and offer to assist them with getting things under control.

I actually asked my neighbor if they knew a young person who would be willing to come and weed my beds. I had suffered a heart attack and just couldn't get everything done and the weeds got out of control. Instead of giving me a referral they brought the church youth group to my home and weeded everything for free. One of the adult church members was a landscape pro and he brought his edger and a load of mulch and all kinds of tools. In just a few hours my beds were beautiful.

I will also admit that sometimes it is not possible to establish a friendly relationship. If you have jerks as neighbors you may want to check with your municipality and see if there are any rules on how high the weeds are allowed to get and just file a complaint and let the municipality deal with them. If they are beyond jerks and are actually someone who you think could be dangerous you may want to just ignore the issue or build a fence.

Knowing your neighbors is key in knowing the best approach.