Chufa is considered a neophyte, meaning it can spread uncontrollably and displace native plants. So make sure it can't 'escape'. Keep it in check with a root barrier or simply grow it in a pot or raised bed.
Facts and figures
Planting & harvest times of Chufa
Transplant to bed from Mid April to Mid June. Pre-grow about 30 days before transplanting, approximately between Mid March and Mid May. After a growing period of 210 days, harvest can begin around Early November and continues until Mid April next year.
Predecessors and successors of Chufa
Since chufa isn't related to any other commonly grown plants here, there are no notable crop rotation issues. If you've had different experiences, we'd be happy to add your findings.
Harvest and processing
As easy as it is to grow, harvesting is unfortunately a bit fiddly. You only harvest the tubers after the first frost. Then you need to wash them repeatedly until you've separated them from soil and small stones. Luckily, the little tubers float, so you can skim them off the surface of the water.
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