my plants are dieing what deificency is this? i cant find it on the computer!

i looked everything up from google to youtube to books and everything, i fed then some nitrogen a week before they started dieing , they're in veg stage, what should i do? im desprate

Are these seedlings? How old are they? It looks like nuts burn to me, but some others might have differing ideas based on their experience. Estimating their ages by your pics, I would be very careful about feeding them. Especially if they are in soil (I couldn't tell if it was soil or coco in the pictures). I grow in hydro and coco so no nutes in the medium, and I wait until the seedling has completely consumed its cotyledons (the first little, non-serated leaves and the accompanying node of serrated leaves directly above it) which serve as the seedlings food-source in its first stage of life. They will go from green to light green and continue until they are shriveled up, dried up and fall off. The leaves directly above them are also part of this food store so they too yellow and begin to die off as the plant moves from seedling to vegetative plant.

Even after that occurs, I feed them very, very lightly. Like 1-2 drops in a 16oz cup full of water max. You might try flushing them with water pH'd to 5.8-6.0. If you have anything like H&G Drip Clean or a flushing agent (I use Heavy 16 Finish) you might want to add a *very* small amount to the water as well. If you are using any beneficials that would be fine as well, but the important thing is nothing that would provide any N-P-K. Flush them out with 2x the volume of the container they are in and give them a day or so to see how they respond. If you see them with their leaves stretching up towards the light the next day, the flushing probably did the trick and the issue was probably overfeeding.

They look like babies, you have to be gentle until they are ready

the little ones are 3 weeks and the tallest is like 5 weeks

one plant looks ok, feed it, the rest are too nut def and I would bin them and start over cos they wont yield. if they got nute def at this stage then flowering they wont stand a chance, get some decent soil and keep it nuted so the plants are watercress green

I am not sure that a 3 week old seedling is nutrient deficient though. I would still flush the little ones and see what happens.

Just a thought here, looks like you have a lot of bark in your soil. Bark tends to be very acidic especially pine bark fines. I would check the PH of the soil/water/runoff. Possibly add some dolomite lime but it takes time to break down and be effective at normalizing PH. Next time add some dolomite lime to the soil mix (if you didn't this time).

To me the soil looks bad. It looks like all bark and it won't hold any nutrients or water. Good soil is so important, the Ph. of the soil is also very very important.. If you have too low or too high of a Ph. the nutrients will be tied up and the plant can't take them up. I have attached a pic. showing the Ph. of the soil and what nutrients are ava. or which are tied up at each Ph. level. Hope this helps.

i am gonna say it does look as though there is a ton of bark almost like a mulch get some potting go to a grow store or garden store and get some new soil ask the worker for their advice

def the soil. are there bugs in the soil ? they dont like bark in the soil, id start again . dont kill them stick em outside and when you take them out chuck the soil (gently knock what you can off without damaging the roots) and just use some general purpose soil (organic if poss) to plant them in the ground and give them a good soak (do it in the evening then they have the nights rest to settle and will prick up at first light and continue to grow).

good luck.

They dont like whatever that is they're planted in. And it sure doesnt take much at all to burn them with any kind of nitro additive, especially given so young. You might want to give consideration to starting over again, and this time use a soil mix more conducive to growing MJ.

Yep as said above, the medium is bad and I'm sure I see bugs on your leaves in pic 7/8.... they have been really set back, even if you sort the issues they will most likely be runty and stunted. I hate to say it but I recommend tossing everything and starting from scratch.

Actually you might be able to salvage something from your healthiest plant if you repot and show her a ton of love.

Happened to me on my very first grow...poor soil....

Can someone give me some advice on mine? Thanks in advance
https://www.rollitup.org/t/power-plant-broke-in-half-at-1-wk.824380/

-stay dabbed