What's wrong with my cucumber plant, and what can I do to cure it? I am zone 10a, in SW Florida, growing in containers and trying to be organic (if I can). Hope you can help, thank you!
Though Cucumbers can be effected by some diseases and have issues with pests, I believe this could be simply could be caused by overhead watering or excess moisture issues. The bacterium Pseudomonas syringae is caused when water sits on the leaves or splashes unto the leaves.
The yellow spots should have little effect on the crop of Cucumbers.
Avoid overhead watering and try to water early enough in the day so that the leaves dry before the end of the day.