I have been told that if you collect runner bean seeds to early, while the pods are still green, and you use the bean seeds the next year the plants will be flowerless.
I never knew that.
I don't believe they'd grow - how are you going to store the seeds over the winter unless they're dried and you can't dry them until the pods are ripe and the seeds are mature. Immature seeds won't grow.
Sounds like an Old Wives' Tale to me.
Bit of a wind up there, who would want to grow runner beans that don't have flowers, therefore no beans.
Hmm, not sure about that, but why the hurry anyway? Leave the pods to die off and then collect the seeds. I buy new every year because I like trying different types but my sister has used dried seeds from plants originating 10 years ago
I would image that sowing seed that hasn't yet formed properly will indeed not produce flowers, nor I suspect, will it produce a stem or any leaves
Like all seeds they need to be dried off, and kept in a dry place, otherwise they rot off, when properly dried can be stored for a few years, this years crop came from seed saved in 2008, and a good crop.