http://durgan.org/2017/January... 1 January 2017 Sweet Potato Slips
My six sweet potato slips are outgrowing their pots so were transplanted into a larger container. They were placed in the greenhouse. Establishing strong roots prior to planting in the outdoor garden improves production.

http://durgan.org/2017/Februar... 11 February 2017 Sweet Potato Slips
My sweet potato slips were started too early so they are being cut back as required and will be kept alive until planting time about the end or May. They have been touched by frost, since my greenhouse is not ideal as for temperature when the outside gets below about minus 10C. There is a heating mat under the pots.

http://durgan.org/2016/Septemb... 15 September 2016 Sweet Potato Harvest
My ten sweet potato plants were harvested. This is my first attempt at growing sweet potatoes under reasonable conditions. Eight of the plants were from slips purchased from a site on the internet. Two purple ones were from slips from a supermarket grown by myself. The supermarket slips were longer growing hence accounts for their larger production. The total weight was 31.5 pounds from ten plants or an average of 3.15 pounds per plant. With good growing conditions extrapolating my results an expectation from each plant would be about 6 pounds in a home garden. All the new tubers were centered around the planted slip in a diameter of about 12 inches. The vegetation covered a very large area and was very healthy. It was removed before digging the tubers. Some of the tubers were disfigured by an insect or rodent. This was simply cut away. The tubers were placed in a hot greenhouse and will be allowed to cure or condition for about ten days, then stored in my root cellar. One tuber was baked and is shown with these pictures. It was most pleasant to eat.

Sounds like you had a fun experiment! I love purple sweet potatoes.....Short growing season here, so not sure I could do it...no greenhouse....

RobinD said:Sounds like you had a fun experiment! I love purple sweet potatoes.....Short growing season here, so not sure I could do it...no greenhouse....

My zone is 5b same as yours. In a warm Summer sweet potatoes grow well. They are even growing them commercially in my area and they are excellent. Problem is to sell them. They produce too many and had to cut back.

Wow...always thought of sweet potatoes as a southern crop.....guess I could try them!