saving pea seeds

I have some peas which grew to about 7ft high and cropped abundantly on the top 4ft. Problem is that I'm certain in said on the packet "grows to 3ft high. I would like to try again next year to see if the same happens. I can't be certain what they are but Kelvedon Wonder comes to mind!! @7ft???View attachment 2608

Question is: How do I save the seed for next year?

TIA

 

Hi Maltaron
Kelvedon wonder should only grow to 18"/45cm, whatever variety
you have in your packet it isn't Kelvedon wonder. if you want to
save some seed for next year, just leave some pods on the vines
until they are dry, then just take them off and store the peas in a
paper bag somewhere cool and dry.

Regards Pete

 

Thanks Pete, I guessed at KW because I did have some. Whatever seed these are it definately said "3FT" on the packet, and the cage bars are 7ft high. I'll do some more research to see if I can identify them.