Pole beans not flowering

[Jeannine]

I have a  pole  bean growing, the plants are growing beautifully outside . I know this one  grows exceptionally tall but there are no signs of flowers yet. I wondered about the heat being too much but I have another bean growing in my greenhouse which is very hot and it  is yielding a lot of pods . My Gigantes  which are a runner are full of flowers and they are outside. Puzzling??