Courgettes - flowers but no full size fruit
I am temporarily posted to Sierra Leone and usually garden in Lincolnshire. I wanted to try and grow some things that I have never tried in the UK. I have great cucumbers, tomatoes, sweetcorn, even parsnips and leeks are growing but my courgettes are not. I have read there are male and female flowers and at times I have had both on four plants. However the female ones (with the tiny fruits) never grow full size. I have tried transferring pollen with a feather (haven't managed to buy a paintbrush) but the large male flowers are rarely open at the same time as the smaller female ones. The temperature is about 33 degrees and there is no rain at the moment. I water daily in the evening. Any thoughts?