So my diesel's are on day 55 flower and I have banana popping up. If they were the only plants in the room I would let them go, and I would still like to let them go, the problem is that I have three other plants that I flipped to 12/12 10 days ago. Just starting to get pistils on them. If I chop in say 10 days will that pollen effect the plants just starting to flower?
It could, it depends how mature the bananas are as well as the new females. My personal choice would be to save the bananas, use them to pollinate one of your newer females, and you will have feminized seed. That's a win-win!