Help, all of my older cucumber leaves have these yellow / brown spots on them. Some of the stems have off-white/yellow streaks on the stems. Any ideas? See the pictures...
cucumber leaves spots...
Maybe downy mildew ?
Hopefully someone with experience will come along .
That sure looks like it. thank you. I'll start treating the plants with Daconil, see if that thwarts it.
It looks to me like it might be a type of mosaic virus. Once a plant is infected you can't do anything but try to prevent it from spreading. I think you should research that and if there is a good chance that is what you have, remove the plants and destroy them before it spreads. :( Good luck!!! Please keep us posted.