LONGVIEW, Wash.—Rebecca Branderhorst went a little crazy in her vegetable garden last spring. The Longview, Wash., resident planted pole green beans, Oregon pea pods, lima beans, three kinds of lettuce, kale, Swiss chard, carrots, bunching onions, white Spanish onions, chives, celery, cilantro and beets. All of it in a 4-by-8-foot box. By midsummer, Branderhorst’s garden […]