This might seem like a silly project to begin with. We do know the seed will not grow true to the plant, being apples we know of are usually grafted, not grown from seed. The first time we did this was as a homeschooling project, after watching a documentary about apples. The plan was to harvest, refrigerate and then grow the seed. It worked well up until the 'sapling' was about four inches tall, whereby it fell over and died one day without much reason.

Well, we have a second one going, and it is about that tall now. But, the stem is still so thin. We had started it on the windowsill and now it is in our greenhouse rack. I'm adding a little artificial CFL light about a foot above the plant for a few hours a day, and a small dose of fertilizer at the beginning of this week. It is in peat growing medium in a four inch pot and the temperature ranges between 65 and 75.

How could we make it grow sturdier, so we might eventually put it outside? Should we move it to a bigger pot now or keep it in a small one? Looking to pick knowledgeable brains, please? Thanks to anyone who helps us a bit with our science project.