I posed the question on the Radix Root Crops forum on FB whether it might be worth trying edible-tuberous Water Ribbons (Triglochin procera) from Australia as it seemed to grow well at Kew Gardens.
I’ve finally got a few plants which I will try to overwinter inside. See the pictures below and the discussion on FB at https://www.facebook.com/groups/141198905918483/search/?query=procera
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