Seeds can be taken out of almost any apple and planted to grow a new apple tree, but they must first go through a period of drying and stratification. During this time, the seed matures and prepares itself for germination. If you plan to grow an apple tree from seed, you must take proper care when drying the seed to ensure it stays healthy. It's a simple but time-consuming process.
Remove the seeds from the apple core. Use your fingers to pull them out rather than a knife or fork--fingers are much less likely to damage the surface of the seeds.
Put the seeds between two layers of paper towel. Press down for a minute to remove excess moisture.
Put the seeds between two sheets of wax paper, which is best to use because the seeds cannot stick to it as they dry.
Store the seeds in the refrigerator until they dry. In most cases, the process takes between three and four weeks. When the seeds feel hard, dry and have a faded brown color, they are ready to plant.