UPDATE: See how I fixed this problem here!
Cucumbers were the very first vegetable plant I ever grew myself, back when the only outdoor space I had was a small balcony that only got 7 hours of sun each day. I started with cucumbers because they are versatile: eat 'em fresh straight from the vine, integrate them into summer recipes like cucumber yogurt sauce or salads, and pickle them in infinite ways to save for holiday gifts.
I've always had an easy time growing my cukes in the past, but this summer seems to be a cucumber blunder. The plants sprouted, vined, and flowered normally, but when they started to produce fruit, this is what I was getting: