Locavore Lament

It has occured to me on many occasions that it has been ages since I've had a sweet potato. Since I was living in Philly to be precise. Today I inquired about this at the farmers market. I appears that the growing conditions in Oregon don't last quite long enough for this plant. You need at least a 100 days for one variety...much more for most others. Perhaps someone in the valley has figured this out somehow. If you know a farmer in the PDX area growing sweet potatoes, let me know.