My squash plants are beautiful but once the little squash comes on the bloom, the squash wilts and does not grow. What is my problem?
It sounds like a pollination problem. These articles will help:
The plants are growing and the flowers are large but then immediately die off. I live in Las Vegas (Zone 11), so watering is an everyday thing. I have fertilized but nothing helped.
This is normal. This article will help:
A way to correct blossom end rot on early blossoms on summer squash. Small squash rot off before they become edible size. Soil adequate - question is what to use to allay this problem.
Does summer squash come up annually?
As with most vegetables, squash is an annual and must be planted each year either by seed or through transplants.
My summer squash is planted in a container with a hibiscus. Could this be causing the stress? Can I replant my squash after it has started to bloom?
Yes, it could. Squash plants require lots of room to grow, especially in containers. Planted with the hibiscus, your squash is continually having to compete for space, water, and nutrients. I would consider separating the two when feasible and repotting or replanting separately elsewhere. You can try transplanting the squash now, but it may die from transplant shock.
My summer squash leaves are curling upward. They are blooming but not producing.
Plants leaves tend to curl when the plant is not getting enough water. Try increasing the water to the plant. This could also be affecting the plant's ability to produce fruit as well.
But, just in case, these articles may be useful:
My eastern Massachusetts area has had a lot of rain. We got control of slugs, but now I see fuzzy areas growing on leaves of the summer squash. How can I find out what it is?
It sounds like you have powdery mildew. This is common in vining plants.This article should help: https://www.gardeningknowhow.com/plant-problems/disease/powdery-mildew-homemade-and-organic-remedies.htm