Wondering what’s the best time of year to sow your cilantro seeds or plant onion sets? The Maritime Northwest Garden Guide: Planting Calendar for Year-Round Organic Gardening by Seattle Tilth (and multiple authors over the years)defines a complete time-line for sowing a wide range of edibles and flowers. Also included are a number of excellent articles on organic gardening techniques, like summer cover crops and recipes for preventing powdery mildew. Buy online.