Yacon, also called "Bolivian Sunroot" or "Earth Apple" is a wondrous tuber that tastes like a delicate jicama - refreshing! It grows well in California, including in the foggy outer Richmond district of San Francisco. After a harvest, the bulbs left in the ground can easily be separated and given to friends to start new plants.
My friend Noah Miller, who lives in the East Bay, just sent word about the progress of the Yacon bulb I gave him:
I decided to go digging for yacon today. Here it is, my first crunchy sweet little tuber, nestled among peas & other friends!
Pocket Seed Library may have a yacon celebration in Spring - if you have yacon stories or want to attend, let us know!
Harvest photo by Noah Miller. Yacon resembles a sweet-potato and is shown in the upper left side of the photo. More pictures of yacon are here: Life Cycle of a Yacon Plant