by Sadge, at Firesign FarmIn a foot-wide bed along one side of my garden grows a line of sturdy plants, six to seven feet tall.The leaves and stalks look a bit like sunflowers, an impression reinforced in fall when the plants are topped with sparse clumps of bright yellow daisy-like flowers.They're pretty enough to be just a decorative garden backdrop. They grow tall enough, even in a small space