As far as know it's impossible to get beans without pollen unless your plant is named "Mary of Nazareth". You need a male or a hermie. It could have been only a few nanners you missed that already exploded. The beans won't be viable unless you let them finish on the plant.
Hi Bar,
Thanks for the response. I chopped 2 yesterday and they are hanging. I found and pulled a few nice dark seeds from both plants, but left most of them alone. I threw out a couple of light ones. I am hoping when they dry I will find a bunch of good ones. The ones I already collected were dark and looked healthy. You think those will be good?
Still not sure where the nanner came from.