Please help me identify what these spots are

4

420Mn

Well-Known Member
Can anyone identify what this is and what's causing it?

I posted this earlier under the title "calcium deficiency."" but it's definitely not a calcium issue as it's on the lowest set of leaves (first true set).

For reference, this is a recirculating dwc system, rw and hydroton, using revese osmosis water. The plant is just starting to show her 4th set of true leaves and was started on nutes and calmag a few days ago. Yes, I've been advised I should have started sooner, but research told me to wait until the cotyledons start to yellow, as the cotyledons provide the plant with the nutrition it needs for the first weeks of life.

These spots seem to be positioned along the veins of the leaves and are only on the first set of true leaves (both leaves).

The pic thats zoomed in is of a part where the "spots" look in color and shape.
 

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4

420Mn

Well-Known Member
Ed Rosestale said:
If you are refering to the white dots, those are trichomes. The brown spots are calcium deficiency.
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It's still in the seedling/early veg stage so there are no trichomes yet. And I originally thought calcium deficiency but it's on the lower leaves and calcium deficiency appears on upper leaves. But thank you for trying to help! I appreciate it.
 
E

Ed Rosestale

Member
420Mn said:
It's still in the seedling/early veg stage so there are no trichomes yet. And I originally thought calcium deficiency but it's on the lower leaves and calcium deficiency appears on upper leaves. But thank you for trying to help! I appreciate it.
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White dots are definitely trichomes, does not matter the stage you are. There are more types of trichomes, do yourself better reasearch. Brown dots coupled with lime new growth are definitely calcium deficiency. Your plants dude, have fun growing
 
4

420Mn

Well-Known Member
7CardBud said:
Get a loop and look under the leaves, if mites are present you will see some evidence, eggs, nymphs, adults.
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I'm trying. The plants are still young and those bottome leaves are below the lip of the netbasket. Using my reading glasses (2.25x magnification) I'm not seeing anything. The leaves with the tan spots have white dots all over the leaf tops that wipe off. None of the other plants or any other leaves on this plant have those white dots.
 
4

420Mn

Well-Known Member
medidedicated said:
I was going to say that, the dots do look sus but too blurry to zoom in. OP I learned myself recently that trichs can show at any time but a loop would put this discussion to end faster.
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Really! What's a loop? I can't get a better pic but I zoomed in more on that pic. Not sure if it helps you any.
 
medidedicated

medidedicated

Well-Known Member
420Mn said:
Really! What's a loop? I can't get a better pic but I zoomed in more on that pic. Not sure if it helps you any.
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Just for record, well known member means nothing, I have that and I am still very new to growing but vegging I did plenty of. Some spots here and there can happen for whatever reason, just keep an eye on it and update with how it continues to grow if its bug or nutrient related. A little suspect that those dots wipe right off though.

A loop, jewlers loop, just anything that magnifies everything but camera quality matters too, iphones are like little kodaks, very good.
 
medidedicated

medidedicated

Well-Known Member
If I recall correct in your last post you gave only water and that is the first leaf of the plant. I do coco which is similar and do nutes from day one. There the whole “ It takes weeks for changes to show” where that might just now be showing.

How long you been growing? Is this your usual routine? If it works, it works but hydro is easy to keep things green in veg.
 
4

420Mn

Well-Known Member
medidedicated said:
If I recall correct in your last post you gave only water and that is the first leaf of the plant. I do coco which is similar and do nutes from day one. There the whole “ It takes weeks for changes to show” where that might just now be showing.

How long you been growing? Is this your usual routine? If it works, it works but hydro is easy to keep things green in veg.
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Yes. It's the first true leaves. And those white specks appear to be on all the seedlings. Looking back on a pic from the 11th they had specks then too.
This is my first grow
 
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