How many people can one share feed?
As a general rule of thumb one share is probably right for a family of four. It depends on how much each person eats. I know a family of five (two adults and three high school- and college-aged children) who buy only half a share at the Community Farm of Ann Arbor and find it to be quite enough. At the same time, I know a family of three (two adults and one kindergartener) who buy two shares and confess to buying extra kale at the Farmers Market because they dont get enough from the farm. These are extremes. It really depends how much you base your weekly diet on farm food.