I am seeing some brown spots on my Durban autos. It's my first time growing in Coco coir. I am guessing it's Cal Mag deficiency but would like to confirm. Any thoughts?
It might be a calcium deficiency but the spots aren't usually like that and the tips are usually burnt. Take a couple more pics and add if it appears on every leaf or not bedause it might be the development of fungus. This might be the case if you water on your leaves rather than directly in the soil
Phosphorus Deficiency because the spot looks a little blue or red check the soil PH to be sure if PH is good.. Then is calcium
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3
Week 3. Vegetation
3y ago
1/6
10.16 cm
Height
18 hrs
Light Schedule
21 Β°C
Day Air Temp
6.5
pH
60 %
Air Humidity
13 Β°C
Night Air Temp
38.1 cm
Lamp Distance
Nutrients 2
Pot of Gold All Purpose Potting Soil
15 mll
Organic & Natural Nitro Big High Nitrogen Liquid Plant Food 3-0-1
15 mll
Pistil_Whipped Had 4 sets of leaves on both plants. So topped the fifth layer. They got fed, hope they will not go in shock from topping.
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Topping
Technique
4
Week 4. Vegetation
3y ago
1/5
10.16 cm
Height
18 hrs
Light Schedule
24 Β°C
Day Air Temp
6.5
pH
60 %
Air Humidity
16 Β°C
Night Air Temp
38.1 cm
Lamp Distance
Nutrients 2
Pot of Gold All Purpose Potting Soil
15 mll
Organic & Natural Nitro Big High Nitrogen Liquid Plant Food 3-0-1
15 mll
Pistil_Whipped Good week! I topped her last week and both the girls are responding well to topping. I started LST this week.
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LST
Technique
5
Week 5. Vegetation
3y ago
1/5
25.4 cm
Height
18 hrs
Light Schedule
24 Β°C
Day Air Temp
6.5
pH
Weak
Smell
60 %
Air Humidity
16 Β°C
Night Air Temp
11.36 liters
Pot Size
38.1 cm
Lamp Distance
Nutrients 2
Organic & Natural Nitro Big High Nitrogen Liquid Plant Food 3-0-1
15 mll
Pot of Gold All Purpose Liquid Plant Food 1-1-1
15 mll
Pistil_Whipped Defoliated both the plants. They've started to stink a little bit now. I am also seeing pistil sites on the branches. Will flip to bloom butes from next feeding.
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LST
Technique
Defoliation
Technique
6
Week 6. Vegetation
3y ago
1/2
25.4 cm
Height
18 hrs
Light Schedule
24 Β°C
Day Air Temp
6.5
pH
Weak
Smell
60 %
Air Humidity
16 Β°C
Night Air Temp
11.36 liters
Pot Size
38.1 cm
Lamp Distance
Nutrients 2
Organic & Natural Nitro Big High Nitrogen Liquid Plant Food 3-0-1
15 mll
Pot of Gold All Purpose Liquid Plant Food 1-1-1
15 mll
Pistil_Whipped Good week. Lots of light green growth on both plants. Clearly stretching for preflower. Will start adding sugar and carbs from next feeding for enhancing terpene profile
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LST
Technique
Defoliation
Technique
7
Week 7. Vegetation
3y ago
1/4
38.1 cm
Height
18 hrs
Light Schedule
24 Β°C
Day Air Temp
6.5
pH
Normal
Smell
60 %
Air Humidity
16 Β°C
Night Air Temp
11.36 liters
Pot Size
38.1 cm
Lamp Distance
Nutrients 2
Organic & Natural Nitro Big High Nitrogen Liquid Plant Food 3-0-1
15 mll
Pot of Gold All Purpose Liquid Plant Food 1-1-1
15 mll
Pistil_Whipped Good week. Did further LST to expose more bud sites. Had some brown spots with yellowing leaves. Most likely cal mag deficiency. bumped up cal mag supplements.
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LST
Technique
Defoliation
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8
Week 8. Vegetation
3y ago
1/2
45.72 cm
Height
18 hrs
Light Schedule
24 Β°C
Day Air Temp
6.5
pH
Normal
Smell
60 %
Air Humidity
16 Β°C
Night Air Temp
11.36 liters
Pot Size
38.1 cm
Lamp Distance
Nutrients 3
Trinity
3.963 mll
Pot of Gold All Purpose Liquid Plant Food 1-1-1
15 mll
Flower Girl Bud & Bloom Booster 3-9-4
7.812 mll
Pistil_Whipped the deficiencies are still lingering. Bumping up nutrients. Hopefully the plant will recover. Generally slow to bloom because of the issues. Starting to see pistil hairs on the branches now.
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3 comments
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LST
Technique
Defoliation
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9
Week 9. Vegetation
3y ago
1/6
50.8 cm
Height
18 hrs
Light Schedule
27 Β°C
Day Air Temp
6.0
pH
Normal
Smell
60 %
Air Humidity
16 Β°C
Night Air Temp
11.36 liters
Pot Size
38.1 cm
Lamp Distance
Nutrients 2
Trinity
3.963 mll
Flower Girl Bud & Bloom Booster 3-9-4
7.812 mll
Pistil_Whipped Good week, deficiencies seem to be slowing down. Seeing some stretch and increase in foliage. Leaves on bud sites are now showing some trichomes.
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LST
Technique
Defoliation
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10
Week 10. Vegetation
3y ago
1/6
76.2 cm
Height
18 hrs
Light Schedule
27 Β°C
Day Air Temp
6.5
pH
Normal
Smell
60 %
Air Humidity
16 Β°C
Night Air Temp
11.36 liters
Pot Size
38.1 cm
Lamp Distance
Nutrients 3
Bush Doctor Cal-Mag
1.981 mll
Trinity
1.321 mll
Flower Girl Bud & Bloom Booster 3-9-4
9.246 mll
Pistil_Whipped I flished the plant this week because it's not showing sign of flowering even at 10 weeks. I am wondering if there's nutrient lockout. I am also seeing some random brown spots on leaves.
Starting back floweing nutes next week,hopefully it will start blooming soon. If not, will switch to 12/12
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LST
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Defoliation
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11
Week 11. Vegetation
3y ago
1/3
76.2 cm
Height
18 hrs
Light Schedule
27 Β°C
Day Air Temp
6.5
pH
Normal
Smell
60 %
Air Humidity
16 Β°C
Night Air Temp
11.36 liters
Pot Size
38.1 cm
Lamp Distance
Nutrients 3
Bush Doctor Cal-Mag
1.981 mll
Trinity
1.321 mll
Flower Girl Bud & Bloom Booster 3-9-4
9.246 mll
Pistil_Whipped Plant is till stretching 10 weeks in. Not sure what the issue is. There seems like P deficiency ; may have been due to me adding worms casting around week 6. I heard surplus of nitrogen makes it difficult for plant to absorb Phosphorus.
Anyway removed the top dressing of worm casting from the pot. Still waiting to see pistils on bud sites.
Your attention to detail and nurturing touch is evident in the health and vitality of your plants. Keep growing and inspiring others with your green talents! πΏπ