I learned some thing new today about Zucchini. I have never grown it before so when I seen that the flowers were just falling off, like some one took scissors and snipped them off. I went looking on the internet for a cause and treatment.
Well, turns out, that's normal for them to fall off. You see, Zucchini has male and female flowers. When the male opens to release pollen, it falls off. As its job is done. Leaving the female flowers to produce the fruit.
You can read more about this "HERE"