Stratify your rose seeds to encourage them to grow better. To stratify your seeds, place them on a paper towel that has been soaked in a solution that contains half water and half peroxide to prevent mold from occurring. Fold the towel to keep the seeds inside and then put them all into a resealable bag. Place the bag inside a refrigerator that is set to 34 to 38 degrees Fahrenheit. Keep the seeds in the refrigerator for six to 10 weeks. Another method to stratify is to place the seeds in a tray of potting soil, cover the tray and then place it in the fridge for a few weeks.