Ms. Johanna came upon the vacant lot on one of her walkabouts after she retired. Bamboo and trashed choked, it seemed a perfect place to park her considerable energy. She brought a machete the next time she came around. By summer’s end, the soil had been replenished and mulched Four raised beds overflowed with herbs, some beans, corn and berry bushes. That was twenty-two years ago. Now 82, she’s still working this portion of earth pretty much by herself.