I am growing a green courgette Midnight and a yellow courgette Soleil F1 next door to each other.
I noticed the Soleil had some yellowing leaves whereas the Midnight was growing ok.
I removed the yellow leaves and gave it a foliar feed with diluted liquid seaweed as I thought the yellow leaves was caused by a deficiency of something.
However the new leaves are also turning yellow.
Does anyone have any ideas.