Q.Why Do My Cucumber Leaves Turn Yellow
My cucumbers almost start out looking beautifully, but then the leaves start turning yellow and dying. What is causing it?
Certified GKH Gardening Expert
As I am looking at this, I notice signs of very high humidity. Your location would explain this. This can lead to fungal issues, which I suspect is Downy Mildew in this case. Heavy soils can be partly to blame, as well.
Treatments will consist of fungicides. You could get away with natural fungicides in this case, since the disease is not very resistant to treatment. Here are some articles that will help:
https://www.gardeningknowhow.com/plant-problems/disease/downy-mildew.htm
https://www.gardeningknowhow.com/plant-problems/disease/cucurbit-downy-mildew-control.htm
https://www.gardeningknowhow.com/garden-how-to/info/using-fungicides-in-garden.htm
https://www.gardeningknowhow.com/garden-how-to/info/homemade-fungicide.htm
This article will help you to grow cucumbers to their best potential:
https://www.gardeningknowhow.com/edible/vegetables/cucumber/tips-for-growing-cucumbers.htm
