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Nutrient deficiency? If yes, what's the best course of action to salvage the situation?
Asuratyrstarted grow question 3 years ago
First time grower of 3 autos, at week 8, lower leaves started turning yellow, top leaves started to get smaller/develop brown spots 2 weeks ago. Is this a nutrient deficiency problem? Soil should have been fertilized for 3 months, but I'm thinking they burned through it.
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Leaves. Color - Pale
Leaves. Color - Dark-brown
Feeding. Deficiences
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TheUk420Showanswered grow question 3 years ago
Nitrogen my friend the yellowing of leaves usually means shes in need of more feed looking by the size of her im not suprised just up her feed and this should sort its self out in the time it takes the plant to uptake it probably about a week or two in soil :) the brown spots is again a underfeed and that one is cal mag rememeber that the elements NPK and cal mag are mobile nutrients within the plant they are in constant use no matter which stage of growth you are in anyway you should be fine them leaves will be consumed and fall off will be replenished by fresh fans dont worry yoooull be fine brother :)
Organomananswered grow question 3 years ago
Cannabis is a "gross feeder" meaning she is a hungry plant.
3 months might be fine for petunias but you will need to feed your cannabis plants, especially in those small pots and soon.
The spots are an indication of a calcium and magnesium deficiency and the yellowing a nitrogen deficiency.
Buy some cannabis specific nutrients, follow the instructions and your plants should continue on their merry way.
In future, pots of 15-18 litres would be far more suitable for your autos.
Cheers, Organoman.
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