Sad Looking Zucchini

Question

My zucchini started off looking very promising. Now is seems like all of the leaves have died and all that is left are stems with blooms.

Answer 1

It may have a vine borer. This article has more information:
https://www.gardeningknowhow.com/edible/vegetables/squash/squash-pests-identifying-and-preventing-squash-vine-borer.htm

Answer 2

Look at the roots.