Cut the tomato in half and take out the seeds. Place the seeds in the container and put twice as much water as you have seeds. Rinse the seeds and make sure all pulp is removed. Once it removed the seeds are ready for planting. Put dry seeds in the plastic bag and then into the refrigerator. The seeds should stay in refrigerator for 1 to 2 weeks before they can be planted into the ground. Find a small pot and plant your seeds in them.