I'm trying to be super careful this year to record high/low temps on days I hybridize. I was pretty good last year & have some info for previous years. So far I can see no good evidence that humidity, temperature or even rainfall has any effect. Some 'perfect' days, no crosses take. Other days when nothing should take (high temp, humidity &/or heavy rain) a surprisingly high number of pods set. I do need to check if later blooms produce more pods. Low temps probably don't matter for me since only 1-2 cultivars could possibly bloom when night temps get that low in Fall.
This is why I go out every day and make crosses. I just can't predict which is the best day/time/flower.
