Stratification and Seed Storage: persimmon seeds require a two- to three-month period of chilling at between 35 and 50 degrees Fahrenheit before planting. This process, called stratification, softens the seed coat and allows germination to occur. The seeds need to be kept moist during the stratification process. A good way to keep persimmon seeds moist is to place them between layers of damp peat moss in a sealable plastic bag. Just remember to put a few holes in the bag to allow air circulation. You can also mix the seeds with damp sand for stratification. To get persimmon seeds started, you need a soilless planting mix and some 8-inch pots. A good way to determine how deep to plant a seed is to bury it the same depth in the soil as the diameter of the seed. It's important to keep the soil around the seeds damp during germination and the initial growth stage. A temperature of around 70 to 75 F works well for starting seeds.