I have 5 sweet chilli plants in pots in my greenhouse each plant has about 8 chilli's on it which just keep getting bigger and bigger, they are about the size of normal peppers, but none are turning red some have even started to rot. The plants also keep getting taller with more flowers and fruits being produced. Yesterday I removed all the growing tips, flowers and small fruits and cut off some of the leaves as I do with my tomato plants, in the hopes that this will make them turn red. I grew the same chilli's last year and had no problems with them, the only difference to the growing conditions this year is that they are in larger pots and of course the weather has been much hotter. I only water them when they are dry and only feed them every two weeks. Can anyone please tell me what I am doing wrong.