Advice on my Cucumber plants needed

Hi

I am new to gardening and thought it would be a good way to take my mind off things whilst working from home.

My plants are doing well and are about 6 weeks old. I have noticed on one of the plants, one leave has yellow dots all over it. There is no mold or spores on the underside, and it is the only leave on the plant affected. Any idea what it may be and am I best cutting back that leave to prevent any spread?

 

Not sure what it might be, the older lower leaves do tend to succumb to all sorts of things in my experience. So long as you are getting fresh healthy leaves on the growing point I wouldn't be too concerned. To be on the safe side snip it off.

 

I've seen similar with white fly on the undersides of the leaf, but they are pretty obvious if they are around.