An estimated 500,000 hobbyists in North America are making wine with purchased grapes, juice, even berries. Some even grow their own. By Eric Asimov Reporting from Geyserville, Calif., and New York.

You may already know you can grow zucchini, potatoes and tomatoes in a bucket — see the Weekly’s March 5 Home & Garden edition — but did you know you can brew your own wine at home, too? Just maybe ...