2RedEyes
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This leaf is from the bottom of my autoflower plant. It appears to me like a phosphorus deficiency but I am giving it a decent flower nutrient in earth juice Bloom plus a little calmag. I referred to the GWE (grow weed easy)website and read that this deficiency can be caused by incorrect ph of the soil. I ph my nute mixture to about 5.5 and just measured the runoff from this plant at 6.8. Now the GWE site says for good phosphorus uptake the soil ph should be between 6.2 and 7 so I’m right there. I guess the yellowing could be normal at this stage but the brown spots worry me and there are brown spots on the next level up as well plus the leaves overall are kinda droopy or wilty almost like it needs water but the soil is not dry. I’m using an LED that is probably not great for flowering but it’s what I have and a couple of 2700k cfl’s as additional light. Temps are in the high 60’s to middle 70’s depending on time of day and light schedule.
Also the soil is FFOF on the bottom 30% and Roots Organic on the upper 70%.
View attachment 2F363477-1097-481C-A5C6-E55070A3D5FE.jpeg
Also the soil is FFOF on the bottom 30% and Roots Organic on the upper 70%.
View attachment 2F363477-1097-481C-A5C6-E55070A3D5FE.jpeg