I'd say it's the heat, things should improve when it cools down. Some of my later planted pole beans aren't producing flowers right now, we're going through a hot (for us) spell, approaching the 90's, we don't as a rule have many days like this. My Blue Greasy Grits have topped their teepee but aren't flowering, neither are my Barksdale but there's still plenty of time at least for me.

Annette

Thanks Annette,
My plants are getting old...........otherwise, I'd think that the cooler weather in Fall might be good for them.
The drought we're having is supposed to unfortunately last into Fall. My garden sure prefers rain water to ground water......but at least the groundwater is keeping them alive.