Day 60 from sprout, grown in happy frog soil, using fox farm trio at about half dosage. Completely cut nitrogen about a week ago and just using big bloom organic and tiger bloom. I use an organic spider repellent and fungicide by growers ally once a week. Why do my leaves look like this? Is this a deficiency and some sort of leaf septoria?Even the healthy leaves are starting to curl up and turn black on the ends.
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Forgot to mention that these are ILGM super lemon haze autoflower
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The FF trio is meant to all be used together. Recommend reincorporating the Grow Big.
A little more info needed…
Calmag added every feeding?
Have you followed the FF feeding/flushing schedule?
And what are your runoff numbers (pH/ppm)?
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I agree w/@Borderryan22
Plants still need nitrogen in flower stage, just not as much
Here is the ff feeding schedule if you dont have one.
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I have a question. When you look at the week 5 row, do you mix all three, 3 BB, 2 GB and 1 TB in one gallon of water?
Yes, mix them together and stir good. Add the water 1st, then nutes if using a bucket.
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I’m dealing with the exact same thing! Leaf Septoria is fairly uncommon. I thought it was a first but after hunting around, I think it’s a ph problem. They are outdoors in large pots so I have to rely on a automatic watering system, unless I give them food which is the only time I ph anything.
This is a progressive display of phosphorus deficiency, probably caused by ph imbalance
Here are mine:
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I should add that you can’t just rely on your nutrient solution being ph’d correctly. I had to do a soil slurry test to find out mine was around 5 but the ph from my hose is 9+
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Thank you all so much for the replies. I mixed my nutrient solution thoroughly in 1 gallon of distilled water and let sit for 15 min before testing ph. I would adjust ph after anywhere between 5.8-6.2. My girl is in a 3 gallon pot and have to water often. I fed more than twice a week a few times due to the heat and needs of the plant. I’ve given cal mag only twice. My next watering will be soon. My plant got soaked from the storms today in metro detroit area Michigan but when watering next I will reincorporate grow big and cal mag. How long of a flush should I do before harvest? I’m again, 60 days from sprout and my plant flowered quickly due to all of the rain.
@Caligurl …Thanks for the info…I have seen that here and there on my plants too…Luckily it was only a leaf or two and then it seemed to go away on its own…Its usually when the plant is still young/small…
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I wish it were that simple for mine. I just keep defoliating the bad leaves so I can watch and see what happens or if it’s getting better.
I’ll see if my foliar feeding of calcium and Micro-Build makes a difference when I get home
For work on Wednesday night. It’s getting hard to even get a soil sample because the soil is packed with roots! I can dig down hardly at all 
and I can’t oh my water most time because it’s on a self watering drip system.
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