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??
My late varieties of pole beans are not flowering yet either. There are differences in flowering times. Some beans are clearly for after the 'summer holidays' and earlies are starting to produce now. I would not worry Jeannine.
I also have varieties not flowering. One is a variety, Armenian Striped Brown, which I'm a guardian for, for the Heritage Seed Library. So I'm hoping it flowers very soon. But I don't think it's time to worry yet.