Sorry to read of your weed problem. Where are you based? Has the weed already flowered? Are you able to share a photo of the area that it's a problem? Providing more information will help other community members provide more useful advice specific to your problem.
Thanks for joining in the discussion and welcome to the Workshop community. We're looking forward to reading more about your projects around the home and garden and trust that you'll get loads of helpful information, advice and inspiration from other members.