Hi to SF bay area folk, There are still some growing Tropaeolum tuberosum for sale up at the UC Botanical garden. They do better with a little warmer climate than Berkeley but will grow here. The tubers are quite tasty. They are among the Lost Crops of the Incas Little-Known Plants of the Andes with Promise for Worldwide Cultivation. BTW that book is available online. http://books.nap.edu/books/030904264X/html/ Liz