I can see the difference between the outdoor and the others started under the light

A customer has a question and I hope we can get some opinions on it, thank

I started some outside before I bought my grow light. I can see the difference in my pic between the outdoor one on the left and the others started under the light. The cup on the right has a new sprout and an outdoor sprout that was broken by the wind. I put the top part in the soil and it refuses to die. Will it sprout a root?