No, but tell us how you get on, as I expect I'd like to eat them. Real
Seeds say it is simple as dahlias, of the variety one overwinters
indoors, and show a picture of big tubers dug up. Other sources say you
need a long growing season. 'Vegetable Seeds : Unusual Tubers: Oca,
Ulluco etc' (
http://tinyurl.com/a4swbes)
I expect you need a lot of rain, but then you have that.
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echinosum