In article , Bob Hobden
writes
Of that list I do not compost Couch Grass (twitch) as I have seen it
survive composting and ruin a heap by growing through it.
Bindweed can survive so I don't compost that either.


Beechgrove last night warned that you shouldn't put Japanese Knotweed in
the green bin as it's illegal though this might just apply to Scotland.
You have only one recourse, kill it, let it dry and burn it.
--
Janet Tweedy