I planted these apple seeds in November last year, and they grew until winter started here. Then they did not grow for very long, and the one had white stuff on its leaves. So I thought it is not going to make it. But about 2 weeks ago, it started developing these new leaves, which made me very happy I now keep them in my greenhouse, since our winter nights still get really cold for them.
Wow! That's a nice seedling you have there. What variety is it ? I have quite a few apple trees and other fruit.