I have some volunteer cucumbers that have come up and have blooms. Will they produce edible fruits?
Volunteer vegetable plants are SO fun! They don't always grow true to the original, but they can be fun experiments. Chances are, if there are no other cucumber varieties nearby for this year's volunteers to cross-pollinate with, it will produce edible fruit.
Learn more about self-seeding plants here: https://www.gardeningknowhow.com/garden-how-to/propagation/seeds/managing-self-seeders.htm