billycardine0420kingcommentedweek 21mo ago
I chose this strain from Sensi as well
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mainlining Jack Herer on 40x40cm
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Filt
RAM 08-350-150 Filter - 100/200
Qualitäts-Blumenerde Soil
Compo Sana
Perlite
Floragard
Indoor
Room Type
Transplantation
weeks 2
Main-Lining
weeks 3-4
12 L
Pot Size
Start at 5 Week
G
Germination1mo ago
zorn_des_kinski Welcome to my second grow diary and my 4th grow in total! Jack Herer has been on my list for a while now and when there was a sale at Sensi Seeds I immediately got a 3+1 pack. I´ve never had the opportunity to try this strain but I heard so much praise that I´m already very exited for the harvest 😊
I germinated it using the papertowel in a ziplock bag method. After only one day the root was visible and i planted it into a 0.5l transparent cup with some holes in the bottom. I put some black tape on it so the roots won´t be exposed to light. Another transparent cup was used as a humidity dome. On 19.06.2025 the cotyledons were unfolded, I count this as day 1.
My plan for this plant is to try 4 or 8 fold mainlining and start the flowering phase early as I´ve heard that this strain likes to stretch a lot.
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Used method
Paper Towel
Germination Method
1
Week 1. Vegetation1mo ago
4 cm
Height
18 hrs
Light Schedule
30 °C
Day Air Temp
No Smell
Smell
40 %
Air Humidity
0.5 L
Pot Size
45 cm
Lamp Distance
zorn_des_kinski Even though the temperature and humidity are far from ideal the plant develops well. Today on 25.06 i removed the humidity dome and she looks happy. Lighting is at ~40%, no circulation fan so far.
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2
Week 2. Vegetation1mo ago
15 cm
Height
18 hrs
Light Schedule
32 °C
Day Air Temp
6.5
pH
Weak
Smell
45 %
Air Humidity
12 L
Pot Size
40 cm
Lamp Distance
Nutrients 2
Alfa Boost
2 mll
Calmag
0.5 mll
zorn_des_kinski In the last week I repotted the plant into its final 12l fabric pot. We had a proper heatwave in Germany - outside temperatures went up to 37°C (98.6°F) where I live, and in the tent, temperatures reached 34°C (93.2°F) - way too hot. Luckily, the plant didn't suffer as much as I did, she grows happily along and doesn't seem to mind. When watering I used 0.5ml/l CalMag and 2ml/l Alfa Boost, pH adjusted to 6.5. I'll carefully start using fertilizer with the next watering.
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Used techniques
Transplantation
Technique
3
Week 3. Vegetation19d ago
10 cm
Height
18 hrs
Light Schedule
30 °C
Day Air Temp
6.5
pH
Weak
Smell
45 %
Air Humidity
12 L
Pot Size
35 cm
Lamp Distance
Nutrients 2
Alfa Boost
2 mll
Calmag
0.5 mll
zorn_des_kinski I began training her into a 4 fold mainline by topping above the third node when she had 6 nodes in total. I gave her a few days and then removed all growth below the third node. Some gardening staples were used to bind down the emerging side shoots horizontally. After the initial top I only watered her with pH adjusted water and a bit of CalMag and Alfa Boost. Now I wait for the side shoots to develop 3-4 new nodes and will then cut next to the first nodes. Temperatures decreased a bit but I'm still looking at 29-31°C in the tent.
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Used techniques
Main-Lining
Technique
4
Week 4. Vegetation13d ago
15 cm
Height
18 hrs
Light Schedule
30 °C
Day Air Temp
6.5
pH
Weak
Smell
45 %
Air Humidity
12 L
Pot Size
35 cm
Lamp Distance
Nutrients 3
Alfa Boost
2 mll
Calmag
0.5 mll
Green Power 5in1
2 mll
zorn_des_kinski Continued mainlining-training with the second topping right after the first nodes of both sideshoots, as well as bending down the four newly emerging shoots horizontally. Also removed leaves that were covering new growth on them.
Got a slight fungus gnat infestation which I treat by spraying and watering with neem oil emulsion.
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Used techniques
Main-Lining
Technique
5
Week 5. Vegetation6d ago
23 cm
Height
18 hrs
Light Schedule
28 °C
Day Air Temp
6.5
pH
Weak
Smell
50 %
Air Humidity
12 L
Pot Size
35 cm
Lamp Distance
Nutrients 3
Alfa Boost
2 mll
Calmag
0.5 mll
Green Power 5in1
3 mll
zorn_des_kinski Neem must have worked well, the fungus gnats all disappeared. I'm gonna treat her one more time to be sure.
On 23.07 (day 35) I flipped her to 12/12. I wasn't sure if that was a little early, but as the strain tends to stretch a lot she will probably be tall enough anyway.
Next week I will be on vacation and a friend will water her.
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Versizecommentedweek 55d ago
I'll be following this as we are almost on the same trajectory time wise on the same seeds. Yours is looking mighty fine. Very cool technique. I see my training is far les structured.
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zorn_des_kinskicommented7h ago
@Versize, I just followed your report as well :) I don't try mainlining to increase my yield but simply because I like the challenge of trying something new. And it will for sure be interesting to compare the plants development
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