Question, every time i plant a set of 15 couch potatoes i receive less when i harvest them back is there something that telling that you will loose the seeds after you harvest them?
Was your backpack/bank full? Sometimes if your backpack is full, they will go automatically to your bank. The only possible way you would lose them is if your bank was full at time of harvest. I'm pretty sure Couch Potatoes always reseed, so check your bank!