I'm trying to start sweet potato slips for the first time--hoping to grow some roots for me to eat and lots of vine for my rabbits to eat (I'm in zone 5, upstate NY).
I have one sweet potato half in water and another in soil which have sprouted. The water-sprouted potato has had sprouts for 3 weeks or so; they leaves are a nice lush green but they're very slow growing--the longest sprout is about 4 in.long with 5 leaves, most are shorter. (The air temp is around 60, which I know is cooler than optimal; started these in a warm place over the fridge but moved them for more light when the leaves came out.) White roots are growing, not out of the sprouts, but out of the lower end of the potato which is in the water. I've seen articles saying to twist shoots off at 5-10" long, at which point some of them will have roots...I do see little raised nodes on the underside of some stems and I don't know if those would root if put in soil or water.
Should I wait and see if the sprouts grow longer? Should I plant the whole sprouted half in a chunk so as not to lose the roots? Twist the shoots off anyway and maybe plant the root half separately? Any advice would be greatly appreciated.