Growing Sweet Potato, also Kumara

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18 Nov 11 graham (USA - Zone 5a climate)
I would like to try to grow kumara potatoes in our green house as you say they need a long growing season. Can you advise me where I can buy tubers/seeds? Many thanks Graham
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26 Jun 18 timothy (USA - Zone 5b climate)
I get my slips from Pioneer Garden and Seed in Villa Park IL. I grew sweet potatoes for two summers with great harvests. I am not sure why they say 5b is not good for sweet potatoes.
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