Using heat source to kill weeds

Does it have hairy leaves and blue flowers? Does it look like anything here?

Plastic sheeting will certainly keep it down for as long as the sheeting is in place, and you'll need to keep it reasonably well weighted with a good thick layer of woodchip, but it might start popping up around the edges if you don't keep a close eye on it.

I have eliminated a patch of borage with glyphosate, and it's possible that if you spray the plants on your side of the fence, the glyphosate will spread through the root system and also kill the stuff on the other side. But there's no guarantee that that will happen, and you may find yourself dealing with it in one way or another every year, because if you don't get rid of it on the other side of the fence it will continue to come through into your plot.

Chris thanks. Such a pretty weed but how we have come to hate it.. we will try the plastic and also shouting at it. last resort is glyphosate it seems.

When it is not out of control it can be quite a useful , the missus uses some as a companion plant for her Dahlias and around the strawberries. Bees like it so it is good at attracting some to help with pollination A farmer up the road has a small field of it , not sure if that is for the oil or honey production from nearby hives which it also good for. Some use it has a herb or decoration of food dishes or posh drinks. .

G.Harman

I've heard it said that plants will do well with little more than a nod of approbation, but I've not heard that they suffer much from the opposite :-)