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Serenityjane420 started grow question 3 years ago
See the week 9 pic of my Pineapple Express cola. Here fan leaves are yellowing and spotting, but she seems just fine (green and vibrant) down below. What might cause this and is there anything I can do this late in her life cycle?
DirtyVirginGrow
9 weeks
DirtyVirginGrow Serenityjane420
+1 strain
15 comments · 3 years ago
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Week 9
Leaves. Color - Mottling
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HighTV answered grow question 3 years ago
@serenityjane420 Thank you for identifying that the new growth is experiencing Chlorosi(yellowing) while the the older and lower growth is still vibrant and green. This is a very important thing in this situation. The reason is because plants have 2 types of nutrients called mobile and immobile nutrients. Immobile nutrients cant be moved and the symptoms show directly on the newer growth where the deficiency is while mobile nutrients can be pulled from the lower leaves to be given to the newer growth as a survival method. BECAUSE you identified your plants Chlorosis started from the top going down and coupled with the rusted dark spots on the fans leaves I can safely say your plant is suffering from a Manganese(mn) deficiency! Fox Farm's Big Bloom does not contain Manganese(Mn)..... Do not mistake this for magnesium! Happy growing friend :sunglasses:
Astrolavos answered grow question 3 years ago
That looks like a Manganese(Mn) deficinecy to me, do not get confused with Magnesium(Mg).

High PH in any medium and/or excessive iron is the number one root cause of manganese deficiency.
When the PH is above a certain level causes the medium to become Alkaline for the roots and this stop's the uptake of manganese by your plant.

The best way to avoid manganese deficiency is to ensure every watering is pH-adjusted to the optimal level.

Now what you have to do is to dry out your soil and then flush it with PH balanced water.
Manganese chelate could be used if you don’t see results clear in a week.
cocotastrophe answered grow question 3 years ago
Try feeding with nutes less often or a lower dosage to let excess nutes be absorbed. When are you starting flushing?
The_Projexx answered grow question 3 years ago
Your plant is showing early signs of nitrogen deficency , you can correct this by simply adding a bit of nitrogen to your nutrient mix up .As well as your tips are showing signs of being burned , you might wanna consider reducing the amount of times you feed with nutrients to every second or third watering , this will ensure that your plant uses all the nutrients available in the medium before you add new ones preventing burns . You must understand that soil retains nutrients longer then soiless mix or hydroponic systems so its important to only feed every second or third watering . Other then that your getting ready to get a kick ass harvest wont be long now ! I hope this information helps you on your quest to the finish line ! -Happy Growing!
Removed answered grow question 3 years ago
There's quite a bit of information missing. Let's start by what you are telling us (and showing us). Watering: half a gallon a day? really ? that's way too much, I hope that's a misunderstanding and you just entered the information wrong. In the previous weeks there were clear signs of nutrient excess (really dark leaves) and nute burn (burnt tips). The issue is on the upper leaves and it doesn't look like calcium deficiency (which as an inmobile elemente does affect upper leaves). Since you don't post pH, I can only assume you are not meassuring it (nor adjusting it), this can lead to many phantom deficiencies and / or werid leaf issues (like yours). Second, it might be Potassium toxicity, but it does not look quite exactly like that. Third, if the watering data is correct, then you are overwatering and you might have fungus gnat damage. Fourth, it could also be some kind of fungus, (it does look like septoria). Anyway this is what I would do: (i) Check pH (and adjust future watering / feedings); (ii) check feeding strength with an Ec / PPM meter; (iii) let the soil dry before giving more water and check for fungus gnat larvae presence; (iv) remove affected leaves and apply mulch and / or sand on top of soil since both gnats and fungus spread through it; (v) increase air circulation and exhaust. Hope that helps
Mrs_Larimar answered grow question 3 years ago
Hi, as you mentioned it, your Plant comes to the End of her Lifecycle, you dont have to do anything. Give her some Molasses for the microbiological Life in the Soil and some Love . you can cut the damaged leaves. Molasses around 1 teaspoon for 1 liter. Happy growing with your wonderful Lady