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Help identifying an invasive weed on my allotment

rorydaredkingrorydaredking Posts: 1
in Problem solving
I need some help identifying an invasive weed which is prevalent in my allotment. It has white stems and long roots which branch off to other stems. I have dug down about 40cm in some places and it goes deeper still. Last summer it grew very quickly up my potato plants wrapping around the stems. 

I have tried roundup on the plants plants and it kills individual ones. I also did something recommended elsewhere of filling a bottle with glyphosphate weed killer and trapping some stems in the bottle to make the plant drink it. This just killed the stems affected with many many more stems still growing in the patch. 

Help identifying and eradicating this horrible plant will be very much appreciated! 

Posts

  • Blue OnionBlue Onion Posts: 2,995
    Bindweed, as PF said.  I spray it when it's in my gravel areas, and hand weed from the raised beds.  I have it all through my grass, so even if I do eradicate it in the beds it just grows back up through the outside surrounding soil.  Thick mulch make it easier to pull up from around your plants.  Reducing sunlight reaching the soil also seems to help.. so under my mulch is a thick layer of newspaper.  It doesn't eradicate it, just deter it a bit.  
    Utah, USA.
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