I am not sure I am putting this in the right place (I am sure it will be moved if it is not) but I have grown quite a few
![Embarassed :oops:](./images/smilies/icon_redface.gif)
courgettes and butternut squashes in the polytunnel in pots. We were away on holiday for a week and asked a friend to look after them in her greenhouse. They were very healthy when we went away, but when we came home they had started to get yellow leaves and since we have put them back in our polytunnel they are going more and more yellow.
They are in 4/5 inch pots and they are getting larger but I dont know if I should feed them or not, and with what. Thinking about it I should but I have never come across yellow leaves any time before. Any suggestions?