Potatoes planted first of April and growing well. Last few days the leaves are turning brown and drooping down. Why? I am consistent with watering, but daily temperatures have been averaging around 95. Now all plants are affected. Brown leaves started with one plant and now four are affected.
Potato Leaves Turning Brown
Certified GKH Gardening Expert
I would assume the heat played a factor initially, but with this seemingly spreading, I am leaning towards a fungal issue, likely Verticillium wilt. Here is more information: https://www.gardeningknowhow.com/edible/vegetables/potato/controlling-wilted-potatoes.htm