Sick Plant. Pics included.

So I have a bunch of plants right, and this one was doing so well.

Its in week 3-4 of flowering. It was developing great. Then the leafs went from flat and horizontal to sagging and curling. I have never had any issues further than basic N deficiency, which I watch for. I am feeling like either its an underfertilization or overfertilization issue. All my other plants are doing fine, but I told my friend to fertilize when I was gone, so this could go either way.

The lower leaves aren't curling, but are looking sad. The top curling leaves have begun to wither and curl into themselves (like when you harvest). As you can see from the leaf shot, its turning parts of the leaf a different color. They aren't crispy. The topside of the stem is a dark color. I am unsure of colors because I am actually colorblind. The change of color starts from the tips and works inwards.

Overwatered? Overferted? Underferted?

As i look closer, I see that they are dying and BECOMING crispy. Uh oh!.

I would flush,
just to be on the safe side.

flush

magic every thread you are bumping is from the winter.
lay off. that plant is long dead by now.
and you are really starting to chap my ass.

Im very sorry to bump this thread back up to the top, since its been so long, But I am having the very same symptoms as the Original Poster, and my leaves appear the same.

Does anyone know what problem this actualy is? Mine are about 5-6 weeks old, in 40% pearlite 60% potting soil. I tested the Ph and it is generally 6.3-6.8. I did a NPK test and found it to be low on N & P but overfed in K. I thought it may have been over watering originally but I am not sure now. Any help with this would be greatly appreciated.

Sorry again for the semi-necro.

You got me.....good luck. Have you tried this link? It's very good.

International Cannagraphic Magazine Forums - The Complete guide to Sick Plants,pH, and Pest troubles!

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Originally Posted by NewGrowMan

Im very sorry to bump this thread back up to the top, since its been so long, But I am having the very same symptoms as the Original Poster, and my leaves appear the same.

Does anyone know what problem this actualy is? Mine are about 5-6 weeks old, in 40% pearlite 60% potting soil. I tested the Ph and it is generally 6.3-6.8. I did a NPK test and found it to be low on N & P but overfed in K. I thought it may have been over watering originally but I am not sure now. Any help with this would be greatly appreciated.

Sorry again for the semi-necro.

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NPK test? is there a test for this other than watching what you put in, looking at the plant, and figuring it out from there?

If I were to guess i would say over fert.
to much pk not enough n.
so i would flush and start over.
if you loose the plant i wouldnt sweat it, cuz it looks sad now. not much to loose from here.

lol, like stinky said, that plant is long gone.

and i can't tell from those pix, but nogrow, it looks like a lock out from too much feeding with bloom nutes (don't ask me how i know :p)

and without pix of YOUR plant, i can't realy say anything else to contribute.

love, lestie

I think that the original problem was a marked lack of ventilation.
Plants CAN and do suffocate. I will post pics if I remember- had a couple males in a stale corner of my veg closet that dies of similar symptoms.
Another possible culprit is nutrient toxicity.