No seeds will come stratified they will be regular seeds when they arrive you will have to germinate/ stratify them yourselves. not stratified.
Place a 1/4 cup of sand (or more) in a mixing bowl.
Add your desired seed amount to the sand.
Place sand/seed mixture in a ziploc bag and seal.
Label the variety and date clearly on the bag.
Place in the refrigerator for 1 month before planting