kyle109
Member
So first off ive tried to diagnose the problem myself using: https://www.rollitup.org/marijuana-plant-problems/488004-guide-nutrient-deficiency-toxicity.html
However this is only my second grow and found things still abit confusing.
I stay in South Africa in a southern town where the weather is great for outdoor growing!
Growing medium:
1. Grown outdoors in the ground so not sure of how far the roots can go.
2. Watered every 2-3 days using normal tap water that has sat for at least 2 days (Ive heard this allows the chlorine to evaporate?).
3. Late into flowering season about two weeks left till winter. Temperature still ranges from 20 to 27 degrees Celsius (68f-80f). Rains about once a week.
4.
Soil mix:
1/2 of mix ( 2/3 peat moss, 1/3 Soil less potting mix)
1/2 of mix (2/3 Perlite, 1/3 Vermiculite)
Added Nutrients to soil mixture:
half a cup of bat guano
3 tbl spoons bone meal
2 tbl spoons Dolomite lime
half a cup of multipurpose fertilizer with NPK of 13:3:8 with trace elements
I have given each plant a dose of 2 tbl spoons of bone meal during flowering roughly 2 weeks into flowering and then again 2 weeks later. I have been using a flower bulb fertilzer with a NPK of 3:9:17 which i use about once a week with a watering.
I have a fairly cheap pH meter that tells me my soil pH is at 7
Plants have been healthy and green up until about 2 weeks ago when they first started showing symptoms. Basically from researching other threads I figured out it must be a potassium (K) deficiency as it has seems to have all the symptoms im having. So in my first attempt to give the plant more potassium i gave it about 3 tbl spoons of bone meal and about 2 tbl spoons of bat guano early last week and watered it in with alot of water. This seemed to help slightly making the really yellow leaves have abit more green in them but only for 2 or 3 days then things started getting worse again. In my second attempt at a
solution I figured maybe its a calcium issue as this is whats said in the self diagnosis thread. Therefore I used about 2 tbl spoons of my flower bulb fert and about 2 tbl spoons of dolomite lime. This was yesterday.
Im struggling to figure out whether ive given the plant too much potassium which is causing the horrible leaf yellowing and spotting and burnt, brown and curled leaf tips. Or if not then why the plant wont seem to sort itself out when I gave it a good dose of potassium? If ive given the plant too much potassium can it be saved so late into flowering? Would the easiest solution be too flush the plants?
please any help will be greatly appreciated im busy shitting bricks here as ive got no clue what to do..
Here are the images of the most affected areas. Please let me know if any other info is needed to make a better judgement.
However this is only my second grow and found things still abit confusing.
I stay in South Africa in a southern town where the weather is great for outdoor growing!
Growing medium:
1. Grown outdoors in the ground so not sure of how far the roots can go.
2. Watered every 2-3 days using normal tap water that has sat for at least 2 days (Ive heard this allows the chlorine to evaporate?).
3. Late into flowering season about two weeks left till winter. Temperature still ranges from 20 to 27 degrees Celsius (68f-80f). Rains about once a week.
4.
Soil mix:
1/2 of mix ( 2/3 peat moss, 1/3 Soil less potting mix)
1/2 of mix (2/3 Perlite, 1/3 Vermiculite)
Added Nutrients to soil mixture:
half a cup of bat guano
3 tbl spoons bone meal
2 tbl spoons Dolomite lime
half a cup of multipurpose fertilizer with NPK of 13:3:8 with trace elements
I have given each plant a dose of 2 tbl spoons of bone meal during flowering roughly 2 weeks into flowering and then again 2 weeks later. I have been using a flower bulb fertilzer with a NPK of 3:9:17 which i use about once a week with a watering.
I have a fairly cheap pH meter that tells me my soil pH is at 7
Plants have been healthy and green up until about 2 weeks ago when they first started showing symptoms. Basically from researching other threads I figured out it must be a potassium (K) deficiency as it has seems to have all the symptoms im having. So in my first attempt to give the plant more potassium i gave it about 3 tbl spoons of bone meal and about 2 tbl spoons of bat guano early last week and watered it in with alot of water. This seemed to help slightly making the really yellow leaves have abit more green in them but only for 2 or 3 days then things started getting worse again. In my second attempt at a
solution I figured maybe its a calcium issue as this is whats said in the self diagnosis thread. Therefore I used about 2 tbl spoons of my flower bulb fert and about 2 tbl spoons of dolomite lime. This was yesterday.
Im struggling to figure out whether ive given the plant too much potassium which is causing the horrible leaf yellowing and spotting and burnt, brown and curled leaf tips. Or if not then why the plant wont seem to sort itself out when I gave it a good dose of potassium? If ive given the plant too much potassium can it be saved so late into flowering? Would the easiest solution be too flush the plants?
please any help will be greatly appreciated im busy shitting bricks here as ive got no clue what to do..
Here are the images of the most affected areas. Please let me know if any other info is needed to make a better judgement.
