I think about growing some perennials in spring. Which are worth growing? Especially the relation of space they need compared to annual vegetables. I thought of Taro Waterchestnut and??? Our land is flat. How do you grow Taro? You lay down some plastic sheet or dig out? I've got a Arrowroot yet, but I didn't dig untilnow (don't know when) it grows beautifully and is very ornamental.