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Grow 4: I don't know Jack....

ocgreen

ocgreen

New member
... but I'm excited to meet him!

Started growing 3 feminized Jack Herer a little while ago and thought i would take some time to share my experience.

All 3 started from seed around beginning of September:

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2 are growing in a 3.5x3.5 under 315W CMH from seed to harvest. Flipped around end of October so they're a couple weeks into flower:

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The last one is a couple weeks behind but filling a 4x4 under LM301B LED 3500k all by herself! Definitely my biggest/nicest plant so far:

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Feeding all plants Mega Crop only. 5g/gal twice per day.

Let me know if you have any questions.
 
Really lovely ocgreen boy you never know what your gonna get with Jack. I still have 2 seeds of Herer:bashful: but didn't grow her this summer. She was the hugest outdoor plant I grew. Then some are not so much, interesting phenos. Anyhoo, you know more than me about lights, you do just great with seedlings so keep doing with what you got it's working. Me i'm still just doing the T5/CFL but I think next run of photos I will try and put them under LED sooner on veg. just to see if they develop quicker. I veg mine for 2 months just flipped mine Oct.3rd. No preflowers yet. I do use the mega crop also mix it with liquid bat/fish poop tea. Man that one Jack is a bushed out wild child, she going be huge LOL look forward to seeing her stretch.
 
Looking good. You caught me with the you dont know Jack part. Lol When I realized you were talking about the strain I remembered why I've never grown it. To many phenotypes but yours look awesome.
 
Jack Herer and Jack Hair...same strain?
Asking because I've read many times in different places that Jack Hair is great for ScrOG setups, and that one you have up there looks like a prime canadate for ScrOG as well.
 
Yeah I'm worried to transition from CMH to T5 for seedling because my germination rate under CMH has been excellent. The only reason I want to change is because of hydro cost, but the difference between 315W and 50W wasn't enough for me to risk messing up the Mokum's Tulip.

Mega Crop already smells so awful I couldn't imagine mixing more poop into it LOL. I remember DingusKhan played a joke on me once and said something about how it smells so sweet (before i received it). Smelled that nasty smell as soon as I opened bag and had a chuckle.

Here's hoping you're right about the one monster jack. Can't wait to see the stretch.
 
Well then for the love of god please teach me how to clone. I tried taking clones from these guys twice already and they never sprout roots. I am actually 0/7 cloning and it's supposed to be so easy 🙄
 
I think so -- Jack Hair is likely just a misspelling of the last name of the activist they named the strain after. Here's a bit of background:

The Jack Herer strain was named in honour of the late cannabis activist, polemicist and author of the all-time classic "The Emperor Wears No Clothes". It has become established as something of a classic marijuana strain itself combining as it does the out-there euphoric, cerebral effect of a pure sativa strain with the resin-producing qualities of a pure indica. It was originally created by Sensi Seeds by crossing a Haze with a Northern Lights #5 x Shiva Skunk cross.

However, as others note, there is significant variation across phenotypes.
 
ocgreen yes it is the stinky mix but I don't use it but every other watering during veg. and put them in the bathtub to water them right now. Sure is good strong stuff my plants are fat lighter size or bigger at the trunk in 2months. Just puts out a lot of leaf growth I notice. It's my 3rd round with mega/guano/fish poop tea, i go less in the mix. i'm conservative with indoor nutes.
 
Just a quick photo to show how "MJ" (monster jack) is progressing:

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That's after raising the lights a few inches, a very conservative/minor defoliation and a little time stretching colas apart from each other to create more airflow.

The other 2 are getting stinky and fattening up

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Even less defoliation in this tent. Basically I removed no more than three dozen large fan leaves (which were blocking bud sites) over a span of a few days.

The second tent was looking pretty dark green so I lowered the Mega Crop over past few weeks. Went from 5g to 3.5g in 0.5g increments and they still seem to be loving life.
 
Hi Obi-Wan -- always willing to share info. I purchased my QBs as separate parts from Kingbrite vendor on Alibaba.

It's the Qb288 V2 LM301B model with HLG 240H C2100A meanwell drivers. Based on a recommendation from a more experienced grower, I went with a triple heat sink because they said it would give more even spread if there's a gap between on triple vs side by side if you use a double heat sink.

If I recall correctly it was somewhere around $1CDN/watt delivered because I purchased enough for 4 units

Let me know if you need more details
 
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In case it wasn't clear when I tried to explain the triple heat sink/space between lights

If you have a double heat sink instead of triple the boards are side by side/light is more concentrated in centre
 
It looks like that setup gives you excellent coverage in your 4x4. I can’t wait to see the final results, I’d like to do a similar build in my 3x3 to replace my 400w HPS. Thanks for the info!!
 
First two are looking great aside from a few rust spots. Think the ph pen was a little off for a few days. Recalibrated

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The plant in the front has much less dense nugs all over but developing ok. Looks a little foxtailed (?) or maybe that's how some buds are because I had one like that in the past.

The plant in the back has some dense frosty nugs that look really nice

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Again, some rust spots that I think is a ph problem (?) but nothing I would consider serious.

MJ in the second tent had to learn how to share because I moved the Bruce (Banger) twins in there

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Here's a close up of MJ

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Thanks SoOrbudgal. I appreciate you sticking around for the journey.

Yes, I am down to about 3g/gallon. Planning to use Mega Crop only until they're ready to flush and then about 2-3 weeks of plain water.

That doesn't let me reduce the nitrogen levels during flower like I should but I don't know another way
 
I am using 1/2 amount of mega crop when I have 4wks left in flower and add molasses to their watering. You know what I mean, then it's just water and molasses till ready to dry out the containers, I let them containers soil dry out. Your doing great.
 
When you say 1/2 do you mean half what they say on the calculator or does that mean 0.5 grams per gallon? Assuming you mean half the amount so probably closer to 2g/gallon but wasnt sure
 
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