It comes from gardening since I was four years old. When living in the city, half the backyard was converted into a garden. When we moved to the farm, our garden was a full acre. We grew all our own vegetables, and quite a bit of our fruit. By the end of July I was sick of strawberries. We had five rows of them 150 feet long, and three feet wide. Every year one row would be removed, and another planted. Potatoes were a real pain. We had to plant, hill, and dig them by hand. Our potato harvest was about 1000 - 1200 lb per year.