Squash Plants Dying, Starting with Fruit

Question

I have planted for the first time in raised beds (4, 4X6 beds) a variety of vegetable plants, including a number of squash plants. They have all been doing well until about 5 days ago. Starting with the Zucchini, they now seem to be rapidly dying off, starting with the fruit and blossoms. The blossoms are falling off and the young fruit are turning brown at the ends and withering away. I had about 12 young fruit emerging; I now have none left.

I have harvested 5 summer squash, and had checked yesterday and they were fine, but now today, a number of the very young fruit on my summer squash are affected. They are in a separate bed from the zucchini. The stalks on these plants seem to be turning a very dark green and the leaves as well. I do not know what to do to save my garden. Please help.

I also have Butternut, Spaghetti Squash, Sugar pumpkins and cucumbers, as well as other vegetables and would hate to lose my garden to this very virulent disease. I live in Central Ontario and we are currently experiencing very hot humid weather (average 30 degrees Celsius) and while I was on vacation, my garden was watered daily, which is not what I would normally do, so the plants have gotten more water than normal in the past week. My soil is an Organic triple mix. Thank-you in advance for any help.

Answer 1

Depending on how large the fruit get, it is either blossom end rot or poor pollination. These articles will help:
https://www.gardeningknowhow.com/edible/vegetables/zucchini/zucchini-fruit-fall-off-the-plant-before-they-are-full-grown.htm
https://www.gardeningknowhow.com/edible/vegetables/squash/squash-blossom-end-rot-causes-and-treatment.htm