Why is my zucchini turning yellow and not maturing?

Question

The fruit gets to be about 1 to 1 1/2 inches then starts to turn yellow and quits growing.

Answer 1

This is likely a pollination issue. These articles will help with that:
https://www.gardeningknowhow.com/edible/vegetables/squash/squash-fruit-falling-off-the-plant.htm

https://www.gardeningknowhow.com/garden-how-to/beneficial/insect-pollination-process.htm

https://www.gardeningknowhow.com/garden-how-to/beneficial/creating-a-pollinator-garden.htm