In article , Franz Heymann
writes

I have a vague memory to the effect that dried bindweed leaves make a good
substitute for marijuana. I have no idea of how true or otherwise it might
be. [Franz Heymann]

No, you've got it wrong. You mention (within earshot of the right people
in the pub) that the white roots of bindweed, if dried over several
months and then imbibed, have an effect similar to that of magic
mushrooms. Then wait for the local oiks to come and dig over your
bindweed patch.

John
--
John Rouse