By Gwenslad
United Kingdom 
Growing my courgettes outdoors the plants are big and healthy. However, when the fruit are about 4inches long, the tip starts to rot. I have tried plucking off the flowers, leaving on the flowers and supporting the fruit above the soil, all to no avail. I water regularly and the plants are in full sun. What am I doing wrong?
John
30 Jun, 2011
Answers
Thank you Cammomile
30 Jun, 2011
Just be a little patient. They will soon or later produce many courgette. It happens to me many times but in the end they produce a lot.
1 Jul, 2011
There is no problem forming the fruit. As I said, when they get to about 4 inches(10/12 cms) the tip starts to soften and rot which then spreads down the fruit leaving it hollow.
4 Jul, 2011
Thanks Coshad
4 Jul, 2011
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They are not being pollenated by insects probably due to the cooler wetter weather. You can do it yourself by stripping off the flower petals from a male (the one without the little courgette) and pollenating the female flower. Mine are exactly the same but given a bit of time and sun they will soon produce fruit.
30 Jun, 2011