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RE: MY FIRST SWEET POTATO STARTS
Very nice had some in the greenhouse a couple years ago that we started in the same way. I think there were three vines growing in a 10 gallon planter and after about 120 days we got 4-5 pounds of small sweet potatoes. They need a long grow season and heat to grow well.
Sounds like finding a way to heat them up enough is the big issue for a lot of people. Hm. How to troubleshoot that....I know my step father tried to grow them one year but he had them in dirt, basically. It was too solid for them to grow and they didn't get enough light because the planter was too tall. His 4 sweet potatoes were about the size of a mangled finger hehe