Among the many signs of summer’s end, the maturing of the jumpseed plant is one of the more dependable. In full bloom, it attracts clusters of cabbage white butterflies that play and court around it. And when its inconspicuous white flowers have turned to brittle seeds and jump to the ground as you run your thumb and forefinger up their stem, then the first week of Early Fall has arrived. When jumpseeds jump, bright patches of scarlet sumac and Virginia creeper mark the fencerows, and streaks of