This is a misleading photo. These are not our squash - at least not this year's squash. This was a typical every-other-day harvest last summer.
Now picture the colander empty. Absolutely empty. We haven't had a single zucchini or patty pan squash yet this year, and we have no idea what's wrong.
The plants are stunted. They are producing flowers like mad, and some small fruit that either get stuck at the size of a dime and don't get any bigger, or die and fall off. We have applied compost and fish fertilizer. We have checked for bugs, and can't find any. The neighbouring winter squash plants are doing great: growing vigorously and setting fruit.
I never would have imagined saying this, but I don't have enough zucchini!