The seeds are like most any fruit seed--inside! I would probably plant them fresh, like lemon seeds...just my HO.

I read that you need to stratify blueberry seeds by planting them in a pot and keeping them in a refrigerator for a few months. Put the pot in a baggie and make sure the soil stays moist. After that you can take them out and put them somewhere warm and they should sprout. Or you could just put them outside for the winter.