(80-90% germination rate.). (Instructions sent with order.). The genetics on the pawpaw trees tend to larger fruit and with a milder sweeter flavor than many of the wild types of pawpaws available. A good way to over winter the pawpaw trees, is to keep the pawpaw seedlings in pots at ground level (on the floor) in an unheated sheltered area that stays above 25° but below 45°F. for the first winter.