>>3746130Newf here - the shrooms that grow wild on the East Coast of Canada are Liberty Caps (psilocybe semilanceata). They're very tiny and very potent. 3g of Liberty Caps is close to 5g of Cubensis.
They grow wild around the time of the first frost of Fall. They can't be cultivated indoor's or anything so that whole thing about an old Goosebumps book might be another shroom (cubensis etc) or the story itself is just bullshit.