Cuscumber plants failing

Usually it's cold and damp that kills them off this time of year.

Can't see your photos Sargan they are just little red crosses.

Where are you in the world?

Here in Surrey it's still too cold for a cucumber plant to live in an unheated greenhouse, maybe in a couple of weeks time and if the forecast was at least 10C overnight would I contemplate putting them in there.

 

The link I can see on Flickr looks very much like it's sun burn. Given the very bright sunshine we have had and behind glass has scorched the leaves. Either give them some shade or move outdoors where it's a bit cooler.

 

I should qualify that, move outdoors during the day and bring into your house over-night.