Hi, I planted green beans in pots on my deck. (Contender & Provider) I've had good success w/them, but the problem I'm having is when I pick a mature bean, but next to it is one that is not ready to be picked, the one that is still growing, shrivels up & stops growing or grows really weirdly. The first ones come in great & to the size they should be. But, after that I end up w/a bunch of "stunted beans. I can't figure out why this is happening. I've been planting beans this way for the last 3 years & it's happening every year. Any help w/this would be greatly appreciated.