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Brown stains in leaves

Gama09

New Member
Hi you all.

My plants are autoflowering and they have 1 month old like me on planting weed. In the last week beggin to appear some brown stains on the leafs.

Bought the soil for tomatos and I dont use any nutrients yet. I only watering them when the soil is dry about 1 cm deep.
I already use neem oil once (1ml for 600ml of watter) to prevent some problems.

Can anyone help me?

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SmokingWings

Well-Known Member
Welcome to the group. Nice looking plant except for the brown drying out spots on the leaves.

I am only taking a guess on what the problem is but it could be there is not enough Potassium available in the soil. The rest of the gang is going to need some more info before they can take a stab at what is wrong. Here are some of the questions they will be asking.

Do you know if that tomato soil is already fertilized or just plain? A photo of the front and back of the bag will help tell if it has a lot of peat moss or coco coir in it and anything else the company might have added.

Have you already purchased the nutrients you are planning on using or are you waiting for suggestions from the group?

You mention using Neem Oil already to prevent some problems. What problems were you trying to prevent?

There is a tutorial on the best way to learn how to water any plant that is in a container. Someone will have the link to it. Once someone provides the link I suggest you read through it. It is long but there are many points to consider on how and when and how much to water so read through to the end. It is almost impossible for someone to tell how much water is in the soil below the 1 cm deep that you test.

And, some of us will want to know why the pots are half full of soil. So they will ask what size containers are you using?
 

Gama09

New Member
SmokingWings thanks for the reply.

I bought the triangle pack from Atami (growth-C, bloom-c and flower-c) and i plan tu use it from now on to see if this problem will desapear.

The soil NPK IS 9-2-2. Is enriched with organic biological fertilizer - with extra azote.

Use neem oil to prevent bugs because my neighbor have a few plants and i dont want their bugs in my plants :rolleyes:

I thing that the pot have something like 14L. They are half full because i think that is the proper way to fulfill the vases...
 
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013

Well-Known Member
Hey Gama,

Welcome to 420! For soil based grows bigger is always better. 14 liters is slightly over 3.6 gallons gallons, that’s not much dirt to drive a big harvest even with nutes. That’s how to fill a vase for regular houseplants but that’s not how to fill a container to grow a weed plant all the way thru to harvest. But since they are autos you shouldn’t try to transplant them. For sure next time around go with 4 gallons full of soil for an auto, you won’t regret that. Old saying around here is bigger roots = bigger fruits.

Will this plant grow indoors or will it be placed outdoors? I’m little bit concerned about that tile floor, I would be paying attention to the temps. It maybe fine and you may have other houseplants there - I don’t know... Hey just for giggles why not toss a hygrometer down there at 2 pm on sunny day

Also you will need some calcium & magnesium or cal-mag. Most NPK nutes don’t include these components check your labels or the manufacturers web site for info but if it doesn’t list calcium & magnesium then you will need a supplement.

All right, settle in and drop a journal down!
 
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Gama09

New Member
Hey Gama,

Welcome to 420! For soil based grows bigger is always better. 14 liters is slightly over 3.6 gallons gallons, that’s not much dirt to drive a big harvest even with nutes. That’s how to fill a vase for regular houseplants but that’s not how to fill a container to grow a weed plant all the way thru to harvest. But since they are autos you shouldn’t try to transplant them. For sure next time around go with 4 gallons full of soil for an auto, you won’t regret that Old saying around here is bigger roots = bigger fruits.

Will this plant grow indoors or will it be placed outdoors? I’m little bit concerned about that tile floor, I would be paying attention to the temps around 1pm. It maybe fine and you may have other houseplants there - I don’t know...

Also you will need some calcium & magnesium or cal-mag. Most NPK nutes don’t include these components check your labels or the manufacturers web site for info but if it doesn’t list calcium & magnesium then you will need a supplement.

All right, settle in and drop a journal down!

Thanks for the reply !

In the next time i will put them in larger pots. I didn't think they needed more space than that..rookie mistake..

This plants grow outdoor. Temperatures can be high during the hottest hours. I have other plants and they are pretty well..but they need water every day.

Tomorrow i will see if the nutrients that i bought have calcium e magnesium. In the manufactures site doesnt tell anything.

Tomorrow i post the news

For the record, today i watered two plants with 1ml of Growth-C + 1ml of Flower-C diluted in 1 liter of water. In the others two watered only with water. I do this for development comparison.
 

Gama09

New Member
Hi you all.

As promised this photos are taken today. Tomorrow will see if the problem keep spreading to others leafs. I don't know if these stains existed yesterday.

The plants continue to grow...
Hey Gama,

Welcome to 420! For soil based grows bigger is always better. 14 liters is slightly over 3.6 gallons gallons, that’s not much dirt to drive a big harvest even with nutes. That’s how to fill a vase for regular houseplants but that’s not how to fill a container to grow a weed plant all the way thru to harvest. But since they are autos you shouldn’t try to transplant them. For sure next time around go with 4 gallons full of soil for an auto, you won’t regret that. Old saying around here is bigger roots = bigger fruits.

Will this plant grow indoors or will it be placed outdoors? I’m little bit concerned about that tile floor, I would be paying attention to the temps. It maybe fine and you may have other houseplants there - I don’t know... Hey just for giggles why not toss a hygrometer down there at 2 pm on sunny day

Also you will need some calcium & magnesium or cal-mag. Most NPK nutes don’t include these components check your labels or the manufacturers web site for info but if it doesn’t list calcium & magnesium then you will need a supplement.

All right, settle in and drop a journal down!

this are the fotos from de nutrients packs that i use

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Gama09

New Member
Hi you all.

I think the problem is solved ... this photos are from today ... yesterday i start LST training.

They have between 5 - 6 weeks, started flowering this week and now Iám putting some nutrients.
Plants were watered with 2/5 Easy Bloom Booster (product Royal Queen Seeds) diluted in 6L of water (water constitution: PH 6.45; Silica 60mg / L; Calcium 1.8mg / L; Sodium 24mg / L; Chloride 18 mg / L; Biocarbonates 45.9mg / L
I think the problem is solved...this photos are from today...y«yesterday biggin the LST.

What are yours opinions?

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Seniorweeder

Well-Known Member
Believe me when I say I'm no expert, but it looks just like my photo's I first grew last year when they developed a deficiency. At the advise of some Pro's on here I started using Cal-mag at 2 ml per gallon and never saw the problem again. May just be my water or something else, I don't now for sure. I but I now use it from veg into bloom every time! Just saying! She looks great otherwise!
 
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