
Take a walk down West 44th Street, btw 10th and 11th, and you will find a wild blackberry bush growing on a fenced off hillside overlooking Amtrack tracks. The fruit from the healthy and strong bush is somewhat challenging to access, but determined folk should have no problem. Here is a blackberry picking guide.
Related, and maybe more important to many of you who do the pot: independent of each other, City Room and Gothamist have both recently discovered marijuana growing in the wild as well.