To Chuck weedkiller over fence ?

I did this a few years ago but it did nothing!
The brambles and ivy continued to grow and started pushing my fence apart. All I could do was trim what came over or through. It was in a part of their garden they couldn't see from the house or access easily so they didn't care whether I cut back or chucked weed killer over etc.

Might be best if you have a word with the neighbour. If you're prepared to help her clear it that might be acceptable to her. If she's unreasonable then tell her you'll be billing her for any damage caused to your fence unless she sorts it.

A 7k fence will not be destroyed by weeds, stop being melodramatic. You've clearly never used weedkiller and understand it's dangers and the hugely obvious, instant yellow dieback that it creates. Although in this case, chucking a bit over the top will do nothing apart from create a human and wildlife health hazard. Grow up.

Isn't there a thing If you pour salt down it gets absorbed into the soil and kills weeds and stuff.
And that's kind of invisible after it gets wet.

Hopefully stuff stops growing so fast over winter and during that time I'd build up the salt content of the soil ready for spring and hopefully everything to Die but it won't be as obvious as weed killer ;)

Absolutely not, would you think someone chucking harmful chemicals, linked to cancer, into your garden, without your knowledge, was acceptable? You're off your rocker. Just prune back what comes over your side, don't sneakily apply chemicals. If their garden is overgrown, it's likely home to lots of wildlife, which the chemicals could have crippling effects on.

she has no way at all to prove that you killed her weeds.

Sending a soil sample to a lab would help.

I'd do it at night. I'd live to see her call the police to report me for criminal damage to her weeds 🤣🤣🤣 she has no way at all to prove that you killed her weeds.

Brambles and weeds aren't going to push your fence over. Just prune anything that comes over the top.

OP is BU that is! Weedkiller needs to be banned

No, don’t do that!
You need to sneak in under the fence not over so it gets to the roots

oh PS, the alternative mentioned in that article seems to be a blanket of boiling hot foam which cooks the weeds...I doubt it would work on established shrubby plants and seems not to be suitable for private gardens www.weedingtech.com

You need to be very careful with the weedkiller. As others have suggested you can kill the stuff that grows onto your property but it's legally dubious spraying it over the fence. Definitely do it after dark, preferably when the occupants are away.

Could you did your garden out so you can get under the fence? That way you'd be able to tunnel under and put weedkiller under the roots. Then fill the hole in and nobody will be any the wiser.

A few pots worth of boiling water late one night would likely solve the weed issue without dooming your neighbourhood to months/years of environmental degradation and carcinogens.

If you’re determined to act.

Are you living on the other side of my NDN? I also paid for a fence because she said she wanted her kids to be able to play safely in the garden. The garden is now so full of brambles and weeds that she cant even get to her washing line and they haven't set foot outside for over 10 years.

The other side actually built a wall and the weeds are already over that and regularly pop through the fence on mine. I now have no problem in dousing them with weedkiller and also cutting off any bits that come over the top and throwing them in her garden. I despair but she won't do anything and her landlord is useless.

Don't get me started on the bindweed that's infesting everything and is also all over my front garden.

Surely a decent fence is strong enough for this ? After all many people grow plants up against fencing. It doesn’t sound very sturdy for seven thousand pounds !!
Weedkiller is highly toxic, you could poison your neighbour, a pet, local wildlife etc, why on earth would you do that ?
You are allowed to trim anything growing through on your side, and so you could ask your neighbour if you can prune branches that are pushing against the fence, but as it was only recently put in then branches can’t have grown enough to damage it.

Of course YABU. It must be annoying but its her garden.

Our neighbours put up a really good solid wood fence.

Before it was done I cleared the whole line of bindweed and brambles, a good 1 m into their garden too.

the bindweed and brambles are already trying to squeeze through the fence. This time I am weed killing them.

I am 99% chemical free in my garden, but round up only kills the plant it touches, and doesn't leave a residue. So I am happy it is safe enough.

I'd do it.

But I'd do it covertly.

If it was me I'd definitely go on a midnight spraying mission over her fence . But it's probably illegal so best thing is likely to not throw it over, get one that will absorb to the root and liberally lather it on any bit of plant that encroaches on your side.