Sprout apple seeds: You'll need a spray bottle for this activity. Dry apple seeds for two weeks; put them on a folded paper towel. Place the towel in a resealable baggie and put the dried seeds on it. Spray the paper towel to get it moist. Place the baggie in the refrigerator for 4 weeks. You will observe roots coming out of the seeds; that is the time they are ready for planting.