Have you ever wondered if you can plant an orange tree from the seeds inside the oranges you eat? While planting orange trees from established seedlings or grafted rootstocks are easiest, you actually can grow them from seeds. However, often fruit trees grown at home from seeds do not live as long as professionally propagated trees, nor do they produce edible fruit as quickly. If desired though, go ahead and eat an orange, gather the seeds and give it a try.
Clean off the seeds and fold a paper towel in half three times. Then moisten it a bit and open up the last fold and put the seeds inside. Place it in a regular plastic baggie, which will not only help maintain moisture, but keep the air flowing as well. Place the bag in a warm location (70-75 degrees F). Ideal places are near a sunny window, in a greenhouse or on top of the refrigerator.
Wait for the seeds to germinate, which should happen within 2 weeks. Be sure the paper towel stays slightly moist.
Gather a small pot (around 4 inches) and fill it with all purpose potting soil. Plant the orange seeds just below the soil's surface with the white rooting sprout pointed downward. You can plant several in one pot, about an inch apart. Place in an area of the home that receives filtered light, like near a window, but not directly in front of it.
Keep the plants evenly moist. A simple way to do this is to set the pot (which should have drainage holes) in a tray of water.
Allow the plants to grow about 6 inches tall. Then transplant the surviving plants into individual quart size pots. This time, use soil that is half course sand and the other half a mixture of potting soil and peat moss. Place the pots the sunniest area of your home. A south-facing window is ideal. You can place them outside in warm areas, but bring them in once the weather turns.
Water your little orange trees once a week and fertilize them monthly using an acidic fertilizer. Your trees will continue to grow until they finally can be transplanted into larger barrel-size containers or outside in your garden or yard (only in subtropical or tropical climates).