You can put a stick or cane in the ground near the plant and get it to grow up the said stick. Then spray it using a Glyphosate and cover the stick/ pole and bind weed with a black plastick bag. This then acts on the leaves and moves down to the roots. It is then safe to grow other plants after the weed is dead.

Alternatively pull out every last bit of root. I have been doing this for three years now and I still have some but not much. As soon as I see it I pull it out.

Thanks for that. My neighbour is with me - we are going out this weekend to get some Glyphosate and will try your cure.

Treesandthi.. solution is the only one - its impossible to eradicate it completely, it will grow from a fragment of root less than eighth of an inch. If you have light soil, its a bit easier, because you can turn it over lightly and then pull and pull and pull and it comes out, but that doesn't work with heavy soil. Putting in canes to get it to grow up those means its less likely to smother your plants, whether or not you spray with a weedkiller.

Thanks

Also, remember that it never grows in the lawn, so just pull up EVERY bit you see, regularly.