Hmm. Make sure that your soil is loose and fluffy, sandy loam is good. It should not be compacted, heavy clay, or rocky. The rocks or hard soil can make the sweet potatoes grow into odd shapes. There are also some diseases that can affect the growth/shape of sweet potatoes, but it is more likely the soil. Hope this helps!
Hmm. Make sure that your soil is loose and fluffy, sandy loam is good. It should not be compacted, heavy clay, or rocky. The rocks or hard soil can make the sweet potatoes grow into odd shapes. There are also some diseases that can affect the growth/shape of sweet potatoes, but it is more likely the soil. Hope this helps!