I have vivid memories as a 10-year-old helping my Italian-immigrant grandfather in his one-acre garden of tomatoes, peppers, cucumbers, and I forget what else. I remember the smell of ripe vegetables, soil, and how everything seemed so fragile, as he ever so carefully weeded, watered, and de-leafed his plants. Yet despite that seeming fragility, he produced heaps of the biggest tomatoes and greenest peppers you ever saw, or at least that is how I remember it.