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Oh yes, be prepared to give them plenty of space! We allowed 1 sq.m. for one tuber and grew it in a greenhouse, the new tubers only really set and grow well quite late in the season, so outdoors a poor season or northerly location will likely result in a poor result. We harvested 15 decent size tube...

I have grown from a sweet potato. I put it in a 5litre square net pot (aquatic pot) though I am sure a large shallow pot would do just as well - in Coir (coco fibre) as this is freer draining than most composts so the tuber is less likely to rot, and also peat free. If using compost use the lightest...