In the autumn when ripe and dry I would put them in a pot of gritty compost, cover with some netting(to stop the critturs eating them) and put them in the cold greenhouse.
or cold frame, porch etc where it doesn't get wet all the time although I wouldn't allow it to dry out......then wait, if you are lucky next spring as the pop warms up your seeds should begin to germinate....
alternatively you can pot them in a plastic bag with the soil and fridge them for a couple of months to break dormancy......

Thank You for the info Pamg :o))