Urban gardeners both new- and old-school would do well this spring to check out Bay Flora, an edible plant supplier that specializes in organic, pesticide-free products that are both "ornamental and nutritionally powerful," to quote founder Maureen Burke. She stocks olive, fig, and citrus trees Kaffir lime, blood orange, satsuma, and Meyer lemon mushroom and seed kits, and edible wreaths. She also offers plants like jujube (pale green leaves, drought resistant), elderberry (good for wine, pies, and jam), goji berry (small lavender/rose flowers in early summer, followed by bright red berries in the fall), and Chilean guava (shiny, fragrant, bronze and burgundy foliage), plus a small but elegant selection of tableware and botanical art. Everything comes with planting instructions to make both you and the tree happy. And get this: With every order, Burke donates a percentage to the charity of your choice, making Bay Flora a good focus for corporate or school fund-raisers. So you not only get a beautiful, food-producing plant, you get to make a difference. Who knew social action could get so ripe?