HELP: seedlings burning! NOT newbie problem...

[cannablissUK]

I recently purchased myself 10 Lowryder seeds, all 10 germed sucesfuly with no problems.

8 seedlings have been in my coboard with no humidity dome under 20W and 11W CFs. They've all been growing well, but with very slow growth (due to them being in poor conditions) but i noticed on one seedling that burning seemed to be acuring through its veins. So all the veins on one leaf started to go a dark burnt brown, like nute burn. Then others seemed to develope this, but not necesarily on the veins. They seem to have burnt cotlyons, burnt new growth, burnt old growth and wilting leaves. one has got really bad - and is very close to dead now, covered in burns and wilting badly (not the stem though)



The other 2 seedlings were moved into a cab a couple of days ago, they were healthy when i put them in there, and are still very healthy and have grown more rapidly than the others in the coboard.

I decided i would move the sick 4 sick seedlings from the coboard into the cab hoping they would begin to recover in more optimum conditions. But after one hour or two i have checked and one is very close to dead, and others seem roughly the same but slightly werse.

I don't have a clue what this could be! I've grown in atsacly the same medium before with no such problems... its 50/50 soil/perlite with nothing else... they havn't been in contact with any nutes!

I thought it could have been temperature or humidity, but the plants are still deteriorating in the cab with good humity and temps...

I don't have atsact readings as that isn't how i currently grow... i prefer to make judgements myself than fork out the cash for equiptment - though i do seem quite stupid now don't I! owell...

I did have an infestation which could possible still be present... i think they were spider mites but i never verified this. I don't think the bugs would cause any form of burning though...?

The soil i used had been outside for a day as i did use this to plant some aubergines outside... but again, if i had any form of infestation in the soil - the seedlings would not be burning...

this is so frustrating! not being able to help these seedlings and watching them rapidly die!!

I can't seem to find any pattern with the plants sufering from the burning... all i can see is that the werser ones have taken up less water, and the healthier ones have taken up more water. This could be the key in diagnosing the problem, what do you think?

There is no more patterns... plants that got watered burned, some that got watered didn't burn. Some that didn't get watered burned (very minor though, only on cotlyons...) some that didn't get watered didn't burn....

I understand i probably havn't given all the relevent info needed to make a diagnosis, so please ask for any other info you need. Please remember though i do not have any fancy gadgets and my camera isn't good enough for close-ups...

I am FUMING because of this! i got 100% germ and they were going well! I havn't changed anything sinse my last grow apart from them being in the coboard with no humidity dome... so that means temperature and humidity were very low... but this doesn't cause such burning?

I must say also, this is not anything to do with the lighting, they were not burned from being too close.

I'm completely lost for ideas! please help a desperate grower in need

I'm gunna take them out the soil, rinse the roots, then plant in 100% vermiculite. If this is some kind of problem related to the medium then this might help... the worsed plant is almost dead so unless i get some good help soon I'll just have to try that as there is nothing else to try!

now let me go watch my children dieing...

CBUK

 

[Guest]

Damn man. Something MUST have changed. Agreed with repotting - at this point it certainly can't hurt. It sounds like nute lock-out - did U check the roots on the dead ones good? May need to get out your magnifyer for Trichs to check, if you had infestation some sort of residue hanging in there - pest problems could show up like that if the roots are affected. If not associated with nutes - has your water supply been tampered with? Out water company changed conditioners on us once and it drove me to fits until I found out they used Calcium - my ph went through the roof.

Geez - hope that gave ya some ideas....

 

[cannablissUK]

Damn man. Something MUST have changed. Agreed with repotting - at this point it certainly can't hurt. It sounds like nute lock-out - did U check the roots on the dead ones good? May need to get out your magnifyer for Trichs to check, if you had infestation some sort of residue hanging in there - pest problems could show up like that if the roots are affected. If not associated with nutes - has your water supply been tampered with? Out water company changed conditioners on us once and it drove me to fits until I found out they used Calcium - my ph went through the roof.

Geez - hope that gave ya some ideas....

Your right, something MUST have changed... something im too dam blind to see!

I have repoted the dieing seedling, looking at the roots they did seem in ok condition. I just can't understand it... I've NEVER seen anyone with such a problem... burning with no nutes or chemicals, no lights or extreme heat... i just can't see what it could be! The dieing plant i repoted looks even werse after the repoting - why ohh why am i punished?

I wouldn't know if the water has been screwed with... but all the plants that got watered were watered at the same time. And one plant that didn't get watered has burning of the cotlyons. This is agonising for me, no info on the net whatsoever... in my time of need!! i'm sitting here watching my babies die with no control whatsoever!!

I'm nakered but can't sleep... I'll be up all night searching for the solution - it doesn't look like im gunna find it... but i'll keep looking... its gunna be a long night....

CBUK

 

[Rellikbuzz]

Hey CannablissUK - I agree that it must be a PH problem causing some sort of drastic nutrient lockout. I know you hate to spend money on growing tools but I SURE would part with twenty bucks or so and get at least a PH pen (like a Hanna) and check your PH. Couldn't possibly be much else since there are no nutes used. The only other thing that stands out is that you have used so much perlite in your mix with the soil. Perlite acts as a buffer in the soil and can prevent (or limit the amount of) any nutrients or moisture from getting to the roots.

Since you are up drudging through the internet, have you tried the FAQ section at OG? If not, maybe there is something there that could help shed some light on your problem(s). Here's the link if you don't have it bookmarked already. Good luck!

http://www.overgrow.com/growfaq/

 

[Mr GreenJeans]

Cannabliss
Sorry to hear. I haven't been growing 420 long enough to have a problem like this, but I have had this problem propagating some of my bonsai. Sometimes it takes a while to figure out the problem, I've been able to recuperate young sick plants by carefully bare-rooting them in some water with a drop or 2 / gal of Superthrive, and then planting them in sterile sand. Straight water for a few days until they look like they've taken to the sand, and then very light nutes. I can recover 50% of plants by doing this, and the recovered plants do well after another transplant into soil...

But then again, sometimes plants can be just plain stubborn. :smile: And the autoflowering of Lowryder might limit how long you can recover them and still yield something.

Just an idea, keeping my fingers crossed for ya... -MGJ

 

[Growdoc]

That is one heck of a read for such a simple problem, i understand that u are frustrated and with no pics you must give all the info you can.

What u got your self is a spider mite problem and lowryder will never be able to stand this inside, you have to move them out into nature where the spiermite is on the menu.

or you can use harmful chemical gas and bomb the room, plants and soil all at once.

 

[cannablissUK]

rellikbuzz, thanks for the link - believe me, I've checked the whole FAQ and there isn't any info to help. Looking all over the new last night, found nothing. After getting a few hours sleep i wake up to find that yes, the plant has died. I noticed that the stem STILL isn't wilting even though ALL leaf material has srivled up and burned away.

One thing i forgot to mention that mite be key to diagnosing this problem is the sick plants all have chlorosis of the new growth and all the healthy plants new growth comes out emediatly dark green and healthy, this leeds me to think nute lockout like you said rellikbuzz.

But i don't understand how this is only effecting only a few plants... maybe some are hardier... maybe all of them will be dead in a day or two... i really hate this situation. Also i don't have the abailable funds for a PH pen, looks like im guna have to spend ALL my money i was saving for my new cab - now i'm gunna have to wait EVEN LONGER for it... but it doesn't even look like my plants are gunna live long enough to need a new cab does it...

Mr GreenJeans, thanks for the adbvice, i think I'll pick up some superthrive today to try out. I'm also getting some hydrogen peroxide to try aswell.

Growdoc, how are you sure of this? are you saying the spider mites made my plant begin to burn from the veins outward and eventually burning of all leaves and death? I know spider mites could kill a seedling by eating new root growth, but burning? I've personally never heard of it...?

Thanks for the help guys, i apreciate it. I'll make my way down to the shops soon...

Please keep all your ideas coming in, 'cos i aint got a clue

CBUK

 

[Guest]

cannabliss, I would lean towards the spidermite theory too, if you can't find any other probable causes. Spidermites will stick to the underside of the leaves and literally suck the lymph from the plants, leaving the leaves brown and looking like they have a major case of nute burn. Unless you are one awesome grower, if you don't pinpoint them and get rid of them as soon as they start the damage, more than likely you'll end up losing your plants. If I were you I'd do a search and start reading up on how to pinpoint them and get rid of them. Not all of them spin webs, so don't necessarily be looking for webs on your plants. :wink:

 

[cannablissUK]

Thanks, my grow op is quite a mess so there could be infestation everywere, I'll give everything a clean up - I'll do some research as you suggested on spider mites, i think I'll try get some help from Buzzmobile over at HC 'cos he knows he's sh*t.

I checked another sick plants roots and again, they seem fine...

I'm getting some superthrive and hydrogen peroxide today, if i can't find any trace of spider mites then I'll give them a go...

apreciate everyones input

CBUK

 

[Growdoc]

DONT USE SUPERTHRIVE ON SICK PLANTS

 

[cannablissUK]

Oh right, well someone was suggesting it to me erlier...

Doesn't matter anyway, i got to homebase just before closing time and they didn't have any superthrive (to be expected...) and no hyrdogen peroxide (i thought they would have that...) so i though owell... lets combat this infestation... i look around... hmmm... not a single chemical for killing spider mites... f*ck homebase!

so i rushed to the neerest garden centre, just getting there in time... o joi! they only sell sodin plants.... so i didn't get anything...

I'm gunna have to go Dr Chronics surgery to get my stuff, he'll sort me out
:wink:

Though by the time i go there all these sick plants are gunna be dead... buga.

CBUK

 

[Growdoc]

for a tempory solution you can make it more windy and spry ur plants 2-3 times a day. this will make it very hard for the little fuckers to mate and travel.

nothing in this world will kill off spidermites you can only make them Dormit, not even a Nuclear disaster...

But there are ways to battle these pests. Your are gonna want to buy some neem oil just to have around as preventive and your gonna wanna a chemical gas to help iradicate the Plague, with this in mind i am sure you will be able to find something the ext time you go to a grow shop...

 

[cannablissUK]

Yep, I was gunna get some neam oil :smile:

Those bugs aint completely indictructable, i've seen quite a few people whipe 'em out completely...

CBUK

 

[Growdoc]

Let me put it to you this way...spidermites have lived before Dinasours uptil now.

Dormit is they key word, make it so they dont wanna/cant reproduce.

 

[cannablissUK]

My spider mite problem is now back... i'm guna get some neam oil or some of that tobaco stuff to kill em off...

I ended up loosing 4 plants and the other sick plants recovered

i now have:

2 females
2 males
4 unknowns

peace

CBUK

 

[issack]

what a bummer!!!! jezzzzz...well i learned alittle about spidermites though. thanks growdoc and best of luck in your next grow cannabliss...