Deficiency - please advise.

HI.
I had six plants going in soil ( fox Farm ocean forest) They are Blueberry cross plants. They were nice. Sadly 5/6 came out male. So I separated the males and reverted the female (after 4 days of 12/12 when sex showed) so I can later get clones . The female is growing good but now 4 to 6 leaves are showing yellowing on the edge of the leaves as in the top two rows of the photo below. All other leaves are normal green. I use FoxFarm grow big. (5ml/gal) every watering and flushed last week for the first time. What in the world am I missing. MG? CA? .. why? I am fertilising. I just bought superthrive too and added 1 time (drop/gal) Please advise.

Thank you.

My two cents, they look relatively normal. I wouldn't worry unless the problem gets noticeably worse.

Looks like a little bit of nute burn to me, plus you really shouldn't need to flush the soil yet. Next time you water, just PH it and pour, add nothing else. Catch some runoff water from the bottom in a cup and measure the PH of it. Let us know what it was.

Plants look pretty good, nothing serious yet.

Same issue is starting to appear on more leaves!. (

Top four photos appear just like what I've seen that is said to be zinc deficiency, at least that's what I recollect. Check my thread here: https://www.rollitup.org/organics/98509-issues-organics-pix.html I'm told it's a magnesium deficiency and have begun treating accordingly. On some plants the inter-vein yellowing is spreading very quickly.

This isn't specific for mj, but it's pretty damned good: Plant Physiology Online: Symptoms of Deficiency In Essential Minerals

Here's another one: http://www.onlinepot.org/grow/nutrients2.htm

BAsed on your Help feedback I assume its either Zinc or Iron deficiency. I ll reduce nutes too to see if it remedies the situation. Any suggestions on what supplemetal fertiliser for minerals I should buy? Organic is preferable.

If you wish to see a pictorial history on my garden plz look at this thread:

https://www.rollitup.org/general-marijuana-growing/98600-q-can-i-do-everything.html

By the way , I have never seen a more comprehensive forum than this one. THANKS to its pioneers and everone's participation.

More pictures of this problem are below as it is getting worse daily!

You've gotta get one of the old-timers in on this.

Could it be that the foliar feeding I do 4-5 times a week has done the nute burn on leaves that sort of cup the water. Once the water evaporates, the salt stays and burns the leaf. I hope this is the problem. Ill wash the leaves and see what happens.

ps How does one get "old Timers" to notice you? haha send them a big bud? haha

Good question... I'd send a private message to someone who you think gives good advice and knows what they're doing. Ohsogreen is one of them, as is panhead.

Situation has gotten worse. I added Earth Juice Micro Blast to remedy MG deficiency and sprayed the leafs with clean water to wash off excess foliar nutes. So far things are getting progressively worse. If it continues a bit longer, I guess I flush and translplant. Luckily lower branches are good looking and maybe if they stay so, Ill be able to make some good clones out of them.

I phd the runoff,... was 6.5.

Just a bit of update and request for feedback. When I read description of deficiency problems, what you see in the pics fits Mg deficiency but Grow Big has 0.6% mg and I use it every watering (every other day) I am adding Microblast and will report if it helps.

In the pic below top left you see the leaf discoloration that is very local and spreads on the leaf which indicated a regional burn and therefore seemingly due to foliar feed.

I want to thank the people who have helped so far.

Soil PH is 6.5. Temps 30-32 c.

timbo1212 said:

Just a bit of update and request for feedback. When I read description of deficiency problems, what you see in the pics fits Mg deficiency but Grow Big has 0.6% mg and I use it every watering (every other day) I am adding Microblast and will report if it helps.

In the pic below top left you see the leaf discoloration that is very local and spreads on the leaf which indicated a regional burn and therefore seemingly due to foliar feed.

I want to thank the people who have helped so far.

Soil PH is 6.5. Temps 30-32 c.

Click to expand...

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Timbo1212 ... I am sorry to tell you this, but it's the truth. You are killing Mary with kindness. Overwatering & Overfertilizing are the two most common mistakes. From what I have read so far, you are doing both.
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Watering should be weekly, unless your plants are being put outdoors and being blasted with high temps and hard winds.
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Fertilizing should be done either weakly / weekly or every two weeks. I water weekly - fertilize every two weeks. It's served me well for thirty years of growing. Foliar Feeding should be kept to a couple of times during growth - total. I don't foliar feed during flowering at all. The only sticky stuff I want on my buds is THC.
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So, how do you correct this. Simply - Keep it Simple. Go back to basics. Check your soil's pH, a full day after you have watered or fertilized to get a more accurate reading, if it is between 6 and 6.5 great. If out of limits, I'll help you dial it back in. Next, stop watering so much, stop fertilzing so much and stop the folair feeding period.
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Now, don't be offended - everyone here - who is honest - has done some of the same things you are doing now.
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Plus, consider this. If you still have a male alive, collect some pollen. Since, this is your only girl - pollenate her. Forget cloning, make your bet a sure one. Pollenate her, let her grow all the way to the end and harvest lots of seeds to rebuild with. Clones fail often, if you lack experience, the right conditions & or equipment. So, bet on a sure thing - SEEDS.
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Keep it Real... Organic....
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^^^ I'd listen to this guy.

Ohsogreen said:

Now, don't be offended - everyone here - who is honest - has done some of the same things you are doing now.

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<raises hand> Guilty!

First I want to thank you for the detailed response you made. You think I am kiiling her softly. You are probably right. I have stoped fertilising except for Microblast fertilising as I tend to think this might be a MG deficiency. (and the 1 drop / gal of superthirve)
Microblast is Earth Juice 1-0-0 micronutrient fertilser, content:

N : 1.00%
Mg: 1.00%
B: 0.02%
Fe:0.1%
Mn:0.05%
Mo:0.0005%
Z:0.05%

So if this is Micronutrient defficiency, this hould eliminate it.
I washed all the leaved with clean spray water to make sure it was not reminent salts on the leavesfrom foliar feeding.

See Oh So Green, I feel sorry for the poor girl. it sits in this warm closet (30-32 c) with two fans blowing above the canopy and one either sucking the whole air out from above or blowing it from below. Its a wind tunnel! I only water when the wieght of the pot and the plant has dropped a lot and it feels light. That is usually 3-4 liters once in a couple of days. Its a 4 Gallon pot and with all these leaves transpiring, it dries the soil fairly quickly. Its a hot summer (30c outside) and I cant lower temps further down, not to mention the 400watts of CFL lights.


ph of the runoff water or boiled filtered soil is around 6.5-7.


As for clones, I have read that clones are much more successful if taken from lower branches, and those branches dont make much bud anyways whether for smoking or pollinating. Also I have bought Mondi humidity dome, good rooting gel, rockwool and vitamin b1. I realise cutting the tip of the 5 or 6 bottom branches may stress the plant a little bit, but it provides the oppotunity to have some more female plants and a fresh start aswell. All the top buds will be pollinated as I have pollen from all of my males in the freezer now. (at the cost of infecting my lungs as I was collecting the dam thing)

I am so paranoid now that I place my water in container for 5-6 hours to evaporate chlorine and bring it to room temp. too. On 20th of August, the plant will be 2 months old, and ready for bloom. Ill go to 12/12 after a good flush but wonder : at what stage of budding does one brush the pollen on them? Hopefully the seeds will be good.

I dont know, I have scratched my head endlessly and worried about her too much. I agree that I over fertilised but I flushed once too and It did not fix the problem. If all fails Ill play some Bob Marley tunes for her and I am sure that will bring her around....

Thanks for your feedback my friend.

Is there anything else other than flushing with 3-5X pot size of water that can be done to help nute burn? Symptoms of Nute burn and Mg deficiency are either similar or they both occur at the same time. I learnt a big lesson here to curb my enthusiasm and just let the plants be.

timbo1212 said:

Is there anything else other than flushing with 3-5X pot size of water that can be done to help nute burn? Symptoms of Nute burn and Mg deficiency are either similar or they both occur at the same time. I learnt a big lesson here to curb my enthusiasm and just let the plants be.

Click to expand...

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Flusing with a quarter strength fertilizer solution and doing it with a volume of mix, equal to three times the capacity of the pot works best.
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Then take it outside for some fresh air (co2), real sunlight (a balanced sprectrum of light) & a gentle breeze (physical stimulation).
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From the description of your grow closet, I think your plant could use a break from it. A few days might work wonders.
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After a day or two of fertilising with Mg, I also flushed the plant. Today when I entered my APT I smelt the sweet aroma of Blueberry Bud. It was almost absent for a week or so and I knew something was right. Also today I see new green that coming out of the top of the branches. I am not sure if she is out of the woods but there seems to be a definite improvement.

This may be premature but i want to thank all those that helped me in the dark and miserable hours of Nute Burn!

I will post a few more photos soon so this thead is more complete for future reference.

THis time the leaaves are relaxed and do not point up. However same leaf yellowing is further expanding. I got some Diamond Nectar which is fulvic acid and added today. Maybe it help with mg transport into plant. i also add 1/2 strength FF big bloom. I also will no longer ph up to 6.5 and leave my nute solutions at 5.5-6. Maybe this is a nute lock due to high ph as the soil runoff shows 7-7.5 although I ph up to 6.5 for my nute solutions.

If all else fails FLUSH again ! Flush flush flush --