that to me is a very bad case of leaf septoria,
It’s being grown above a vegetable garden, but where the plants being grown, nothing else has ever been planted there. I dug holes and filled with Fox farms coco loco.
They are being grown in the ground.
Pic of underneath of leave
The lights you have in your grow can put out twice the intensity of the sun because they are within a couple of feet or so.
People get light burn all the time. But this kind that runs up the edge like this is when lights are too high and the plant has enough water to keep itself from cooking. But the leaf edges are thin and more easily burned. So you get light edges and green centers.
Scroll down to see your symptoms
Cannabis Light Burn & Light Bleaching Symptoms & Solutions!
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It’s outdoors, only light its ever been under is the sun.
Right, I got that. Did you check the link?
Out sulfur in a spray bottle or gently dry mist after removing infected leaves , I’ve also had a case where it wasn’t septicemia and was a moldydenum and magnesium deficiency. Also chelates copper spray works but I’d go with sulfur which has worked from me and keep it away from any trees as it can travel and if it’s wet and rainy outdoor try to move it or cover and keep dry
Usually with leaf septoria you will get black spots too but people have told me not always could be a deficient but that’s rarely molbydenum
