Looks like my zucchini are having exactly the same issue as akger1975’s – both of the fruits on one plant have decided to just shrivel away at the end. We’ve had quite a bit of weird weather (buckets of rain, then sunshine) so I’m hoping it’s just the irregular watering patterns causing this.
Found this good page from the RHS that gives a couple of reasons for Courgette failure:
Fruits swelling only at the top, often with shrivelling and rotting, indicates incomplete pollination, usually due to cold temperatures. The problem should decrease as the season progresses.
So, hopefully it’s just the weather and not the plant – I’m going to cut these two off and see if things improve.
Cucurbita pepo var. cylindrica
2 fruits shrivelling and rotting at ends.