YOUR CITY, YOUR SEEDLINGS: Sarah, a staffer at Vroman's, chose "The Urban Homestead: Your Guide to Self-Sufficient Living in the Heart of the City" as her book pick. It is intriguing, and so timely, given the continued rise of the CSA and the community garden. If this is you -- if you need your small stretch of land but you need your skyscrapers close -- pick it up. PATIO GROWING: Authors Kelly Coyne and Erik Knutzen have all sorts of handy tips, urban homesteaders. It's $16.95.