jojo54
Garden Ornament
This info was taken from the following linkGreenthumb18 said:Interesting color for sweet potatoes, never even seen purple sweet potatoes before, but i have seen blue potatoes. Can't wait to harvest my sweet potatoes this will be my first year growing them, the leaves are still green i guess your suppose to wait until the foliage dies back like the regular potatoes.
http://www.canadiangardening.com/ga...rdening/learn-to-grow-a-sweet-potato/a/1264/2
Harvest and storage
Sweet potato growth slows when soil temperature falls below 18C . When the vines turn black after the first frost, harvest your potatoes immediately. Dig them out carefully because the skins are susceptible to bruises and cuts. Leave them outside on the ground to dry for several hours, then brush off the dirt and gently transfer to a box lined with newspaper. Leave them in a warm (27C), humid place for two weeks. Proper curing is essential to create a layer of suberin (a waxy substance that keeps moisture in and helps to heal any nicks or cracks in the skin). Then store at room temperature for up to a year. [The flavour of] a well-grown sweet potato actually improves in storage, says Wingate. The starches gradually convert to sugar.
Some sources say to dig them up before frost because it may harm the potatoes.