For most gardeners, springtime means a time to sow. But for perennial gardeners spring is a time to reap. In their new book, Paradise Lot, gardeners Eric Toensmeier and Jonathan Bates tell their personal stories of finding romance and growing a food forest of perennial plants on a degraded backyard plot. Living on Earth’s Bobby Bascomb took a trip to Holyoke, MA to see and sample their spring harvest.