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Growing Sweet Potato, also Kumara

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16 Mar 17 Sandy.G (New Zealand - temperate climate)
Hi there, I bought a bag of mixed kumara & in it was 5 varieties & 1 was a purple fleshed purple kumara. I think its maybe a relative of potato.. as I am allergic to nightshade family & on eating 1 of these set my tongue and throat tingling, spat it oit and rinsed my mouth out.. any ideas!?
17 Mar 17 Ken (Australia - temperate climate)
Potato is a member of the Solanum (nightshade) family while kumara (sweet potato) is a member of the Ipomoea family which includes other plants such as Morning Glory, a totally different Genus.The purple 'kumara' may have been a knobbly potato packed with the others by mistake.
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