After finding some female flowers on one of the plants two weeks ago, I have been eagerly watching and hand pollinating more female flowers so I was surprised to find these two mature Cucumbers. Either these two grew overnight or more likely I just need to be more observant.
Cucumbers can be a challenge when determining ripeness. You can tell they are ready by lightly squeezing and seeing if they are firm and by checking the skin is taunt. Another good indicator is if the skin is medium to dark green in color. In the case of both of these they were just on the cusp of being ready. So why did I pick them?
When a cucumber becomes over ripe, they quickly turn yellow and rapidly become inedible. This can happen very quickly so if you are unsure if they are quite ready, it's better in my opinion to pick them when they are slightly immature, rather than waiting until the last minute. All you experience is a slight loss in flavor, but that's better than losing the cucumber altogether.
With my powers of observation reawakened, I also spotted three more young Cucumbers on the vines packed close together and you can be sure I'll be watching out for these and others in the coming days.