Cucumbers

Question

My cucumber plants are setting plenty of fruit, but they get no longer than an inch or two and stop growing.

Answer 1

Cucumbers that stop growing could be due to lack of pollination, improper nutrition, pests or disease.
These articles will help you.

https://www.gardeningknowhow.com/edible/vegetables/cucumber/hand-pollinating-cucumbers.htm
https://www.gardeningknowhow.com/edible/vegetables/cucumber/tips-for-growing-cucumbers.htm