Critical Jack Yellowing Leaves And Burnt Tips

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CriticalJack18

Active Member
What’s up guys! I’m 6 and a half weeks into my critical jack herer auto grow and noticed the bottom leaves yellow and starting to go up. Also, the tips of the leaves are a little burnt. I’m using roots organic bloom nutes 1/8 strength every other watering, which isn’t much. No matter how much I use I feel it gets a little burnt. What do you think this is and what should I do? Is it normal? Nitrogen? Cal mag? Here are some pics...
 

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MATTYMATT726

MATTYMATT726

Well-Known Member
Nwver used Jacks but always hear good stuff. Coco or soil? Auto can be nute sensitive from what i hear but 1/8 would not be orevboard. Some autos are finished in 50-60 days. Maybe she is a fast strain?

Edit- not close when looking at the pics. Older leaves yellow and tops look good. Just remove at this point since dead leaves cant help the plant. Let us know if more start but i think it seems fine since all at the bottom.
 
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CriticalJack18

Active Member
MATTYMATT726 said:
Nwver used Jacks but always hear good stuff. Coco or soil? Auto can be nute sensitive from what i hear but 1/8 would not be orevboard. Some autos are finished in 50-60 days. Maybe she is a fast strain?
Click to expand...
Thanks for the quick response. I’ve heard good stuff that’s why I chose them. I’m using roots organic original soil. Roots organic bloom nutes 1/8 strength every other watering so every 5 days or so. It says it’s a 65-70 day strain so idk just a little confused...
 
MATTYMATT726

MATTYMATT726

Well-Known Member
CriticalJack18 said:
Thanks for the quick response. I’ve heard good stuff that’s why I chose them. I’m using roots organic original soil. Roots organic bloom nutes 1/8 strength every other watering so every 5 days or so. It says it’s a 65-70 day strain so idk just a little confused...
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Yeah, over feeding is definatley not the issue. It really just looks like those leaves are used up and died. They usually fall off on their own. Issues with feeding or not feeding wouls mostly be splotches and patterns not a whole leaf. When its close to harvest most leaves will yellow so you've got possibly 3 weeks left and they could just know that. IMO pull them off and keep doing what you are doing.
 
PURPLEB3RRYKUSH

PURPLEB3RRYKUSH

Well-Known Member
CriticalJack18 said:
What’s up guys! I’m 6 and a half weeks into my critical jack herer auto grow and noticed the bottom leaves yellow and starting to go up. Also, the tips of the leaves are a little burnt. I’m using roots organic bloom nutes 1/8 strength every other watering, which isn’t much. No matter how much I use I feel it gets a little burnt. What do you think this is and what should I do? Is it normal? Nitrogen? Cal mag? Here are some pics...
Click to expand...
Leafs should not be yellowing that early unless you got an issue, looks like it's only been in flower for 2 weeks, my guess is Nitrogen def, used all that N up at the start of flower
 
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CriticalJack18

Active Member
PURPLEB3RRYKUSH said:
Up yah feed a tad, not too late, what EC/PPM u feeeding at. Should be around 1.2 EC
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Not sure haven’t checked Ppm this is my first grow. My tips look burnt no matter how much I give. Did you see them? I’m giving 1/8 bloom every other watering. How much should I give? Don’t want to burn them more
 
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CriticalJack18

Active Member
So 1/4? Should I give some veg grow nutes too with more nitrogen or just use the bloom nutes because it doesn’t have that much nitrogen. It’s roots organics Buddha bloom
 
MATTYMATT726

MATTYMATT726

Well-Known Member
I wouldn't think N is going to help. Flower stage doesn't want heavy N in it. I can't tell you for sure what it is since i use coco and GH micro/bloom and cal mag nutes. Zero Grow nuyes entire grow and my leaves stay green till harvest, but i really think youdhave problems all over the plant if it were food issues. The leaves on the bottom are oldest and die first. Not all listed times by breeder are right, but take the small chance 60-70 days is right youre about 45 days in so it would make swnce with 3 weeks left for leaves to start dying. Thats just what i would think if my plant cause aside those it really looks good. Clearly more like 5 weeks left of flower more than 3 but leaves do die before harvest as well.
 
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CriticalJack18

Active Member
MATTYMATT726 said:
I wouldn't think N is going to help. Flower stage doesn't want heavy N in it. I can't tell you for sure what it is since i use coco and GH micro/bloom and cal mag nutes. Zero Grow nuyes entire grow and my leaves stay green till harvest, but i really think youdhave problems all over the plant if it were food issues. The leaves on the bottom are oldest and die first. Not all listed times by breeder are right, but take the small chance 60-70 days is right youre about 45 days in so it would make swnce with 3 weeks left for leaves to start dying. Thats just what i would think if my plant cause aside those it really looks good. Clearly more like 5 weeks left of flower more than 3 but leaves do die before harvest as well.
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Yea man that makes sense too. I’m kind of stumped right now. I will send you more pics when I get home. I heard plants need some Nitrogen during flower but no a lot. Is that true?
 
Budzbuddha

Budzbuddha

Well-Known Member
2¢....

I do autos ... lots of them.
6 1/2 weeks equates to 4-5 week of veg / preflower.
You actually about 2 week in flower.

Time to wind down nitro ( hence the tip burn )
Leaves have stored enough nitro ( dark green )
Lower fade is normal as it is using the nitro TO BEGIN STRETCH and final branching.
You CAN do LST on these to “ open “ plant to more air flow and more importantly more light to mids.

Blurple suffers from poorer penetration thus it helps to bring in panel closer.
Rotate the plants once a week to allow light to hit different parts of plants.
Keep bloom feed as is until it has finished stretch and begins to slow.
THEN AND ONLY THEN ARE YOU IN ACTUAL FLOWER.

Forget beeeder estimate on harvest time. The time posted is UNDER OPTIMAL CONDITIONS ( grow ) and not real world in most setups.

LED GROWS take a bit longer to get buds to mature than say hid lights or CMH.
But you can get some righteous buds if you wait til they are done.
 
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CriticalJack18

Active Member
Budzbuddha said:
2¢....

I do autos ... lots of them.
6 1/2 weeks equates to 4-5 week of veg / preflower.
You actually about 2 week in flower.

Time to wind down nitro ( hence the tip burn )
Leaves have stored enough nitro ( dark green )
Lower fade is normal as it is using the nitro TO BEGIN STRETCH and final branching.
You CAN do LST on these to “ open “ plant to more air flow and more importantly more light to mids.

Blurple suffers from poorer penetration thus it helps to bring in panel closer.
Rotate the plants once a week to allow light to hit different parts of plants.
Keep bloom feed as is until it has finished stretch and begins to slow.
THEN AND ONLY THEN ARE YOU IN ACTUAL FLOWER.

Forget beeeder estimate on harvest time. The time posted is UNDER OPTIMAL CONDITIONS ( grow ) and not real world in most setups.

LED GROWS take a bit longer to get buds to mature than say hid lights or CMH.
But you can get some righteous buds if you wait til they are done.
Click to expand...
Thanks man. Great response. It’s the lower leaves and kind of moved up towards the middle. I heard it takes a little longer but that’s ok. I rotate daily. The plants have stopped stretching and started showing flowers between weeks 3-4. So I should keep doing what I’m doing? Just bloom nutes 1/8th every other watering? No veg grow nutes?
 
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CriticalJack18

Active Member
Budzbuddha said:
2¢....

I do autos ... lots of them.
6 1/2 weeks equates to 4-5 week of veg / preflower.
You actually about 2 week in flower.

Time to wind down nitro ( hence the tip burn )
Leaves have stored enough nitro ( dark green )
Lower fade is normal as it is using the nitro TO BEGIN STRETCH and final branching.
You CAN do LST on these to “ open “ plant to more air flow and more importantly more light to mids.

Blurple suffers from poorer penetration thus it helps to bring in panel closer.
Rotate the plants once a week to allow light to hit different parts of plants.
Keep bloom feed as is until it has finished stretch and begins to slow.
THEN AND ONLY THEN ARE YOU IN ACTUAL FLOWER.

Forget beeeder estimate on harvest time. The time posted is UNDER OPTIMAL CONDITIONS ( grow ) and not real world in most setups.

LED GROWS take a bit longer to get buds to mature than say hid lights or CMH.
But you can get some righteous buds if you wait til they are done.
Click to expand...
Here are some current pics...
 

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C

CriticalJack18

Active Member
CriticalJack18 said:
Thanks man. Great response. It’s the lower leaves and kind of moved up towards the middle. I heard it takes a little longer but that’s ok. I rotate daily. The plants have stopped stretching and started showing flowers between weeks 3-4. So I should keep doing what I’m doing? Just bloom nutes 1/8th every other watering? No veg grow nutes?
Click to expand...
 

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C

CriticalJack18

Active Member
MATTYMATT726 said:
I wouldn't think N is going to help. Flower stage doesn't want heavy N in it. I can't tell you for sure what it is since i use coco and GH micro/bloom and cal mag nutes. Zero Grow nuyes entire grow and my leaves stay green till harvest, but i really think youdhave problems all over the plant if it were food issues. The leaves on the bottom are oldest and die first. Not all listed times by breeder are right, but take the small chance 60-70 days is right youre about 45 days in so it would make swnce with 3 weeks left for leaves to start dying. Thats just what i would think if my plant cause aside those it really looks good. Clearly more like 5 weeks left of flower more than 3 but leaves do die before harvest as well.
Click to expand...
Here are a few better pics. It seems to be going up a little and a little tip burn
 

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Logan Burke

Logan Burke

Well-Known Member
With that dark green, stay away from anything containing nitrogen (Like CalMag, to be specific) except for your regular base bloom. People always want to add cal-mag anytime there is a deficiency symptom of calcium, mag, or iron....but what many forget is that, in soil, it's rare to not have enough of these elements. There is more than likely an issue with getting too much, or too little, of other nutrients.
Budzbuddha said:
2¢....

I do autos ... lots of them.
6 1/2 weeks equates to 4-5 week of veg / preflower.
You actually about 2 week in flower.

Time to wind down nitro ( hence the tip burn )
Leaves have stored enough nitro ( dark green )
Lower fade is normal as it is using the nitro TO BEGIN STRETCH and final branching.
You CAN do LST on these to “ open “ plant to more air flow and more importantly more light to mids.

Blurple suffers from poorer penetration thus it helps to bring in panel closer.
Rotate the plants once a week to allow light to hit different parts of plants.
Keep bloom feed as is until it has finished stretch and begins to slow.
THEN AND ONLY THEN ARE YOU IN ACTUAL FLOWER.

Forget beeeder estimate on harvest time. The time posted is UNDER OPTIMAL CONDITIONS ( grow ) and not real world in most setups.

LED GROWS take a bit longer to get buds to mature than say hid lights or CMH.
But you can get some righteous buds if you wait til they are done.
Click to expand...
This guy here won't lead you wrong....he know's it all when it comes to auto's. Follow his advice and you'll be just fine. :)
 
C

CriticalJack18

Active Member
Logan Burke said:
With that dark green, stay away from anything containing nitrogen (Like CalMag, to be specific) except for your regular base bloom. People always want to add cal-mag anytime there is a deficiency symptom of calcium, mag, or iron....but what many forget is that, in soil, it's rare to not have enough of these elements. There is more than likely an issue with getting too much, or too little, of other nutrients.

This guy here won't lead you wrong....he know's it all when it comes to auto's. Follow his advice and you'll be just fine. :)
Click to expand...
I’m using 1/8th dosage of roots organic Buddha bloom every other watering and I water every 2-3 so about twice a week I feed. Is that too much or too little because I’m noticing the tips burning a little bit...
 
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