We've actually got a rockin' pumpkin patch going on the abandoned yard vacated when our two ginormous spruce trees were taken out by the wind last Christmas.
Downstairs neighbor has been in the habit of putting pumpkins & squash out for the squirrels, who apparently then diligently planted the seeds. I pulled a bunch up this spring before I realized what they were.
People keep complementing me on my "garden," which mostly consists of trying not to kill anything.