Margaret and George, I was going to suggest lack of pollination, also. George are these night blooming w/white flowers or day blooming w/yellow or white flowers? Night blooming of course is pollinated by moths. Day blooming, by bees. I had the same problems with Dipper Gourds 2 years ago in the middle of the drought. My Gourd list people told me it was lack of pollination, not water. I think that the heat had a little to do with it. There was a shortage of bees. The drought had killed a bunch of them. Allen Bastrop Co., SE Central TX Zone 8