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RE: Lost But Not Forgotten | 4 Obscure Seeds 4 Every Garden
Chinese Yam (Dioscorea polystachya). Some call this cinnamon-vine. It’s considered an invasive in some places. Not a problem in my Zone 5B garden. Produces an edible aerial tuber that’s also edible.
Crosnes, also called Chinese Artichoke, are a member of the mint family that produces edible tubers.