My cucmbers turn yellow before they are fully grown. I have several cucumbers growing which are just about 2cm long and then they turn yellow. They are not big enough to eat so I have not left them too long, so what am I doing wrong please? I have only ever managed to harvest one cucumber. They are grown in growbags in greenhouse, please help. Thank you.
Certified GKH Gardening Expert
The cucumbers might be performing poorly because they have not been properly pollinated. Here is an article that will tell you how to hand pollinate your cucumbers: