I keep reading online that a zucchini female flower has to be pollinated for the zucchini to grow. I had a plant this year that had a good sized zucchini on it before any flowers had opened on any squash, melon, cucumber, or pumpkin plant in my garden, and no one else in town was growing any squash. The flower on that zucchini was the first flower to open on any plant in my garden. The female flower came before the male flowers, and the zucchini was big enough to pick before the flower ever opened. So I'm having a hard time believing that they have to be pollinated to grow. Does anyone know anything about this?