Are those only the newer leaves?
If so, has anyone used Roundup (glyphosate) nearby?

Please post an image of the entire plant so that we can see what is affected and where.

Are those only the newer leaves?
If so, has anyone used Roundup (glyphosate) nearby?

Most of the affected leaves are new but I do see some damage at the edge of the older leaf in the center of this photo

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Roundup hasn't been out of shed since early spring cleanup. I did spray the cage with Neem oil a week ago when I saw a few spots of mildew.

Thinking about it more, there may have been some overspray of a weak Miracle-Gro/soap mixture that I used to combat spider mites on nearby vines. I forgot to note that in my journal and now I and can't remember whether it was last Thursday or Friday. Could that have caused this?

Please post an image of the entire plant so that we can see what is affected and where.

I hope this will do. I have 9 cucumber plants in a home-made self watering container. They were doing fine on Friday but now 2 plants have this discoloration. Most of the affected leaves are close to the growing tip and some of the unfuled leaves on two plants seem to be discolored in the same way.

{{gwi:87081}}

As always, thank you for your help.

This post was edited by Athenian on Mon, Jul 22, 13 at 14:55

These look like healthy plants except for the uppermost leaves that look as if something drifted onto them - a herbicide maybe. I would snip off the affected leaves to prevent it from spreading. I think they will recover.