Nute burn or nute deficiency?

I can’t tell the difference. Two days ago I introduced to her some new fertilizer with an NPK of 30-9-10. I didn’t give her the full recommended amount, just a quarter of the recommended amount. Her PPM is at 474. I’m really confused about all this. Some insight could help. I think I may flush her today.

Can you get a better picture. In natural light or with camera flash. The grow lights need to be turned off. But from what I can see. It looks like residue from when you watered and has dried on the leaves.


Nothing you do will correct the damage to a leaf. All you can do is concentrate on the undamaged leaves.

I agree.

Good idea.


The white powder is diatomaceous earth.

It shouldn’t have had water on it. I usually make a habit of not letting leaves stay wet. It may also be fungus gnats. I got too much rushing through my head. I’ll take any advice. Trying to keep my little champ healthy.

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Impossible to see with all that white residue on your plant. The color white reflects light, and the colors black absorb it. This is why orange trees get painted white on the trunk

With all that residue, your plant will not be able to photosynthesize as well as it could or should be able to and makes it hard to see the actual color of your leaves which will help the pros here diagnose your ladies woes.
Is that the problem? Not likely, just my first thoughts.
Now, my first question is……what is all that orange and red gunk on your soil? If you didn’t put it there, I’d be concerned.
I’m not a nute expert but the fertilizer you are using on that week older then a seedling plant seems a lil steep, infact most will say don’t feed a seedling but even that is based off the soil they start with. Filling out this support ticket will help others help you.
COPY/PASTE: This “Support Ticket” into your forum post.
Answer these simple questions the best you can.
If you do not know, or do not use something; Just say so = NA

Strain; Type, Bag seed, or NA

Soil in pots, Hydroponic, or Coco?
System type?

PH of runoff or solution in reservoir?

What is strength of nutrient mix? EC, or TDS

Indoor or Outdoor
Light system, size?

Temps; Day, Night

Humidity; Day, Night

Ventilation system; Yes, No, Size

AC, Humidifier, De-humidifier,

Co2; Yes, No

Add anything else you feel would help us give you a most informed answer. Feel free to elaborate, but short, to the point questions and facts will help us help you smile

I copied this from another page hope it helps welcome to the forum good luck

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That is exactly what it looks like. I was wondering myself because it looks like some weird micronute def u dont see everyday and NEVER in seedlings. But upon seeing the gunk on soil, it def looks similar.

The residue Id definitely get off as well for reasons stted above and it can also interfere with plants ‘breathing’ i believe. Stomata’s or something like that.

Is it only affecting that one bottom leaf?

The gunk is clove and cayenne pepper powder leftovers. I made a mix that ended up too thick and left it around to keep gnats, worms and aphids away. Seems to work, but it might be damaging the one leaf. I don’t know. Two days ago I did wipe water off that leaf with a dry towel now that I reflect back on it.


Sour Diesel
First week of veg
Growth has slowed
pH 6.5
Ppm 474
Outdoor grow in greenhouse

I use cheap LED lights to provide some light during cloudy days, thunderstorms and/or to extend the light cycle from 18/6 or full 24 hours. I even leave the lights on when sun is out, but raise light up to 26-28 inches when sun is out. At night 4-6 inches from plant/s.

Temperature here is mid 70’s to high 90’s.

Humidity: 68-99%

Ventilation system; Yes, No, Size: Greenhouse has six windows, of which three are open, and two entrances that remain open. Windows and entrances have netting to keep random bugs at bay.

AC, Humidifier, De-humidifier: I have two fans. One blowing towards plants and other towards lights.

Co2: It’s outside

You need to stop putting things on your plant (unless you have pests). DE will clog the stomata of the leaves and choke it to death while reflecting needed light away from photosynthetic receptors.

Fungus gnats are nature’s way of telling you that you are over watering. Media too wet will stall plants and extreme cases drown it.

Not knowing anything about your grow makes it very hard to offer constructive advice.

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Should I just put DE underneath the leaves? I’m Fighting a pest war everyday. Just trying to keep the fight up and keep my baby as safe as possible. Feels like I’m doing things half right and half wrong.

I forgot to mention she is in a 7 gallon pot. She is a photoperiod.

All I can think of is Boron deficiency or fungus gnats?

Food Grade DE is most effective dusted on ur dirt. It prevents bugs from successfully laying eggs. For foliage there are other pest preventative steps to take.

But like @Myfriendis410 said, reducing the frequency of ur watering should help combat the gnats. Allow for the soil to dry out properly.

And as I stated earlier. Any micronutrient deficiencies are seen MUCH later. Ive never seen a seedlings starved for boron, maganese, iron, etc etc. unless ur medium is completely pH locked out. Then thats not really lack of whatever. But lack of access to whatever


Captain Jacks dead bug for bugs works great. Along with what others said do not put dust or anything else on leaves they must breath. Water when plants look thirsty. Are they in pots? I grow in 5 gal pots outside they have many many holes in pots. When I water I give them a hole gallon at a time let the water run out of the bottom. Flushes out salts and other bad things. Try to avoid weird things on the soil they are not use to like pepper ect, I do not know how the plant will react.

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Thanks, everyone. I mean it. I have gone through several seeds. If these other four don’t sprout, I’m definitely doing something wrong.


They are in seven gallon pots. The grow bible it says making a concotion of cayenne pepper and oils are harmless. I don’t know. Just going through the motions.


AutoFlowerCulture - Deficiencies and Excess Nutrients Charts Found this lil trove yesterday

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I try to avoid anything that might contribute an ‘off’ flavor or aroma. Plus; most of the pest control issues occur during flower and you do NOT want to spray cayenne pepper and oil on your flower. Or Neem oil.

Captain Jack’s Deadbug Brew uses a bacterium called ‘Spinosad’ that is harmless to pets and people but lethal to invasive insects. The other product that does a great job on things like caterpillars is ‘Safer Caterpillar Killer’: it’s another bacterium called BtK (Bacillus Thurengiensis) and does a similar job on pests. Follow package directions.

Fungus gnats should be controlled by proper watering techniques but in the interim you can use something like ‘Mosquito Bits’ which also contains Spinosad.


What 410 said. These things grow just like a vegetable or potted house plant I follow the same care as I do for them for the most part.