Name: Michele Roth N.E. Indiana - Zone 5b, and F (Zone 9b) I'm always on my way out the door..
to ATP MrQuintus.
Congratulations on your apple seedling!
Whenever I see brown leaf tips, I first rule out fertilizer burn. What planting mix is it growing in and how long has it been doing so? Are you feeding it? If so, what and how much?