Not sure about my potatoes

Can anyone help

This is the first time I have done potatoes and I am trying to be patient but I just need to know I am doing the right thing. I see adverts for putting potatoes in bags/pots and growing them or this chitting method which I am trying. They are in my greenhouse in seed trays and have been for about three weeks and hardly done anything! I understand it will not be til about easter they will have roots on and ready to plant in the ground. Am I doing this right?

Logi

 

greenhouse could be a little cold, (mine is anyway a bit drafty) I chit my spuds on a windowsill in a cold room, dont panic though your greenhouse may be ok. Chitting normally takes 6 weeks and your not looking for roots but hard nobbly shoots.

 

Thank you v much I think you have replied to me before - when it the first time effort I just do not wasnt to ruin them