Plant is Dying - yellow leaves, curling, rusty spots, etc, please help!

So I posted a thread earlier about this problem but its escalated into something a lot worse. Btw, I'm growing a white widow clone, she's almost two months old and has been in 12/12 for 12 days. Its an indoor grow in foxfarms hf soil, with 220 watts of cfls mixed spectrums. Temp is around 80F with lights on, 70F with lights off. PH is always tested before watering and I water every 3 days and nutes every other watering.

Anyways, the first problem I started having was with thrips. They fucked up my plant pretty good and I just recently got them taken care of with some safer insect spray with pyrethrins and mosquito dunks added to the watering to kill larvae. I would say that during the time I had thrips, I also started getting rusty spots on the leaves and the veins turned a dark reddish color. Now I'm watching my whole plant lose its color, the new leaf growth is extremely curled or deformed, all the leaf tips are slightly burnt, and the edges of the leaves are brown and starting to become crispy. I have tried a lot of things - I flushed with clearex almost three weeks ago and today I just flushed again with the runoff reading at a PH of 6.5. The problem with the leaves getting rust spots, curling, turning yellow or brown and then dying has just been getting worse over time. I've been watering with nutes every other watering at 1/2 strength (Botanicare grow, bloom, and cal-mag). I suspected the spots on the leaves were from a calcium deficiency but the cal-mag doesn't seem to be doing any good. If anyone could help me out I'd really appreciate it...this is my second grow (first indoors) and I really don't want this plant to die after growing so nicely until now, thanks in advance! I feel like I've looked into everything..

48 views, no reply...anyone??

Flush your pots. It looks like you burnt the fuck out of your plants. Use just water the next few times. You should really only feed every 3rd time. That strain may not like a lot of nutes.

I'm having the same problem in my garden. It all started after I used Neem Oil to kill spider mites. I've tried flushing, minimizing nutes! The plants are dying from the bottom up. I don't know what else I can do. I've switched to 12/12 to try to at least harvest something!

doitinthewoods said:

Flush your pots. It looks like you burnt the fuck out of your plants. Use just water the next few times. You should really only feed every 3rd time. That strain may not like a lot of nutes.

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I just flushed yesterday so hopefully that helps. I noticed after I flushed the top leaves were pointing upwards towards the light so I'm guessing that might be a good sign? I'll def try feeding less often, and every 3rd time is a good way to do it.

calloftheancient said:

I'm having the same problem in my garden. It all started after I used Neem Oil to kill spider mites. I've tried flushing, minimizing nutes! The plants are dying from the bottom up. I don't know what else I can do. I've switched to 12/12 to try to at least harvest something!

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Hmm, I actually used neem oil (fungicide 3) on this plant 3 weeks ago...but I never thought neem oil could really fuck up a plant unless its a really thick concentration that would possibly suffocate the leaves. Maybe try misting your plant's leaves and getting the neem oil off? Not sure

Okay so I leached the soil with clearex 1 week ago. Then 2 days ago I watered with distilled water. It hasn't seemed to fix the problem but hasn't made it worse. The new growth is still bad though and Im getting so pissed off at this plant right now! Basically every single leaf tip on this plant is burnt even the newest growth. Then once the new growth grows for a few days the leaves start burning not just on the tips but the edges/sides too, and some of the leaves are deformed and curled - not just the top ones either, the middle and the bottom has all the same problems. The oldest/biggest leaves all have a combination of the burnt tips, burnt edges, brown/rust spots, yellowing. I'll be checking the roots tomorrow by taking it out of the pot. I doubt its root rot because I let the soil dry out considerably before I water again, and it has good drainage but I need to check it anyways. The last time I watered with distilled with a ph of 6.5 I took a ph reading of the runoff and it read the same so ph can't be off. Has anyone ever had this problem before or does anyone have any more input on this??? Leaves are falling off or able to be gently pulled off daily now so I'm starting to get worried now.

Btw, when this plant was in this same pot a little over a month ago it wasn't having these problems so I'm thinking either some kind of deficiency, or a root issue. OR am I just not waiting long enough for this problem to go away. How long would a plant take to get over nute burn and start growing new leaves without burnt tips if this was indeed nute burn? I can post pictures if you guys really need em but the photos I posted in this thread earlier is basically a good representation of how they are now too.

I am having all the same problems you are having. from start to finish I have tried exactly everything you did, from clear-x flush to allowing soil to completely dry out over and over again. I am also using Fox Farm soil, ocean forest. My leaf tips start to look slightly like they are pointing down. than slowly the tip will turn a dark brown color and become so dry the tip will be cracking and brittle. eventually the leaf gets rusty spots and basically looks exactly like your pics. I wish I knew what to say. The only thing I can suggest if you are not over feeding your plants is to change the soil. I have heard people saying fox farm soil is quite strong and will burn your plants. I had two clones I transplanted to foxfarm, Both were looking good at first, One is all f**ked. the other was looking good, but even 1 month after I transplanted it to foxfarm ocean forest I still didn't feed it nuts and it still started to brown on the leaf tips. How is it possible it is a nut burn, I didn't feed it at all, UNLESS THE SOIL IS BURNING THE PLANTS. My friend has been growing for years and uses Ocean Forest, he even said he noticed a change in Fox Farms Ocean Forest not to long ago. I think I am going to try to change soil and see what happens. ANY SUGGESTIONS WOULD BE APPRECIATED.

I have had the same problem a couple of times, and I'm now pretty sure it's the neem oil. I recently sprayed my veggies with some neem/washup liquid, an d the next day I have leaf curl. I'm just hoping this doesn't spiral into the same problems ie. leaf drying, browning and dying. It's so annoying AND the damn thrips are back! So wishing I hadn't used neem... How did your turn out?

here this is for all of you guys out there with this problem, i had it once it is now gone!!! i looked for the info and this page is what i got!!!!!! just keep going down on the page as it is pretty long, it will show you pics of plants with all different problems and it shows all the solutions!!!!

http://www.icmag.com/ic/showthread.php?t=11688

here did some reserch for you!! if this is not your problem go to the page i suggested!!

Manganese (Mn) Micronutrient and Immobile Element


Manganese Helps enzymes break down for chlorophyll and photosynthesis production, as well as it works with plant enzymes to reduce nitrates before producing proteins.

Having plants that are deficient in manganese can turn the young leaves into spotted (mottled) yellow and or brown areas on young leaves. Dead (Necrotic) yellow spots form on top leaves, while the lower older leaves will or may have gray specks and or spots. Symptoms can include yellowing of leaves while the leaf veins can stay green. Can also produce a chequered effect. As the plant gets newer growths the plant will seem to grow away from the problem, that’s why the younger leaves may be unaffected. On the top of the leaves, brown spots can appear. While the severe areas of the leaves turn brown and wither. Parts Affected by a Manganese deficiency are: Young leaves.


Too much Manganese in the soil will cause an iron deficiency. The blotchy leaf tissue is caused by not enough chlorophyll synthesis. Your plants will seem to have very weak vigor caused by the excessive amount of manganese.

Problems with Manganese being locked out by PH troubles

Soil ph of over 6.5, High iron soils, Low nitrogen Soils, Dry weather
and compacted soil.


Soil

Manganese gets locked out of soil growing at ph levels of 2.0-5.0
Manganese is absorbed best in soil at a ph level of 5.5-6.5 (Wouldn’t recommend having a soil ph of over 7.0 in soil) anything out of the ranges listed will contribute to a Manganese Deficiency.


Hydro and Soil less Mediums

Manganese gets locked out of Hydro and Soil less Mediums at ph levels of 2.0-4.5
Manganese is absorbed best in Hydro and Soil less Mediums at ph levels of 5.0-5.6 (Wouldn’t recommend having a ph over 6.5 in hydro and soil less mediums.) Best range for hydro and soil less mediums is 5.0 to 6.0. Anything out of the ranges listed will contribute to a manganese deficiency.

Solution to fixing a Manganese deficiency
Foliar feed with any chemical fertilizer containing Mn., or mix with water and water your plants with it. Any Chemical/Organic nutrients that have Manganese in them will fix a Manganese deficiency. (Only mixing at ½ strength when using chemical nutrients or it will cause nutrient burn!) Other nutrients that have Manganese in them are: Manganese chelate, Manganese carbonate, Manganese chloride, Manganese dioxide, Manganese oxide, Manganese sulfate, which are all fast absorption. Garden Manure, Greenssand are both good sources of manganese and are medium/ slow absorption.

Now if you added to much chemical nutrients and or organics,( which is hard to burn your plants when using organics) You need to Flush the soil with plain water. You need to use 2 times as much water as the size of the pot, for example: If you have a 5 gallon pot and need to flush it, you need to use 10 gallons of water to rinse out the soil good enough to get rid of excessive nutrients.


Picture 1 shows a manganese deficiency in flowering.

this just happened to me... and you are correct this is due to NEEM spraying .. i sprayed my plants dripping wet 3 days in a row with neem (stupid) UNDER THE LIGHTS! at least all the spider mites where killed...


thankfully my plant was already in veg over 2 months and was pretty big, already had lst it and also topped it and it grew over 10 heads... the leaves started to curl, burnt to a crisp... i removed all the dead leaves and changed the tank to pure water for a few days and just added sensizyme.. i also moved it from 3 gal to 5 gal during this period... i then started recently to spray it with pure 5.5 water and it seemed to LOVE THAT. the plant started to grow new leaves at the top shoots and now all the top leaves are nice and green again with all the new growth..

i just recently added nutes (low strenght) micro, grow, bloom and b-12 and big bud from Advanced Nutrients
it took about a week for it to recover, but it has recovered..

i just put it under 12/12 starting yesterday, looking good... i am growing a strain called D CUP from a dispensary here in California... it is a cross between KUSH and something else (they wont say what) because it wont several contests here and its strong dense buds , delicious

After using a spray for insects ( "neem" )(probably too much "overdose")my plant is dying.pls help!what can i do to bring it back into normal?leaves seem to be destroyed and fallen down.
Please help, my plant is dying. I tried spaying it with clean water but still the same.

Yikes! http://www.growweedeasy.com/marijuana-symptoms-pictures

Did you dilute in water before you sprayed? Those plants look like death...I use neem oil every 2 weeks and have never seen anything remotely similar to what you got going on.GL

Holy fuck, this thread is like 3 years old!

Ya.. live and learn.. If that is indeed what it is, you are NOT supposed to spray Neem or Safer Soaps, or the likes, on your leaves more than once every few days, if you do do it daily, you will get results that do look just like this..

Ha, ya, I hope after 3 years he got it figured out..

Happy Frog is very acidic

applefun2013 said:

After using a spray for insects ( "neem" )(probably too much "overdose")my plant is dying.pls help!what can i do to bring it back into normal?leaves seem to be destroyed and fallen down.View attachment 2832269
Please help, my plant is dying. I tried spaying it with clean water but still the same.

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Please someone help!

Somebody please help me quick >.<