First grow, plants died overnight!

[Crooked8]

Neem oil is probably the best preventative there is. If you spray neem once a week for the first 4 weeks, youre usually pretty golden. Mix in some pro-tekt(silica/surfactant) and some sm-90(amazing shit) and you have an awesome preventative foliar for mold mildew and bugs of every variety.

 

[Alone]

Dyna-Grows' Pro-Tekt silica solution is a great additive and preventative for the girls.
I love the stuff. It helps protect the entire plant from drought, over watering, bugs, and Powdery Mildew/Mold/Budrot. I stop giving it to the ladies when they start to flower. You can lightly spray the plants and top soil with Neem but I wouldnt drench my soil with it.
Sorry for your troubles this go-round.

 

[bluefoodie]

how are the plants doing BF?

They're doing well, thanks. I removed the dead branches and there's been a lot of growth these last few days. I've transplanted the harder-hit plant from the 1-pint tub into a 2-gal pot. The other one is coming in very bushy. I'm going to repot it into a 3-gal pot soon, and maybe trim back some of the lower branches. The root rot set them back a couple weeks but they're back on track. Compared to how they looked at their worst 2 weeks ago, I'm just amazed at how resilient this plant is.

Thanks for the advice everyone, I just picked up a quart of Pro-tekt. Do I add it every time I water or only when I feed?

 

[ozzieAI]

excellent...good to see you back on track

 

[Hash Man]

Mycostop.

 

[LetTimmySmoke]

dude i just had the same thing happen to a bunch of clones. they were rooted and i put them into some kind of old coco. anyways they all wilted and then crisped up, regardless how much i watered or foliared. i have been having many setbacks with clones lately, something its so frustrating when they just die on you like that! i easily lost 500 dollars worth of clones i am super pissed.

my guess was bad coco or maybe the clones were already unhealthy. plus i had to drive with them in my trunk for a few hours in the heat and maybe that set them on the wrong path.

 

[LetTimmySmoke]

and man to be honest im surprised you even try to revive that plant, even if it comes back in veg it might succumb again in flower. whenever i see sick plants i kill them right away, i can only have my healthiest and hardiest ladies going into the flower room. ive lost way too much money and time trying to flower out unhealthy plants that ended up wasting months and barely yielding anything special.

 

[Gelado`]

Hmmm, 70% with 30% sounds like you got the hydrophobic stuff, which means it floats on water. What you ended up doing was putting a layer of neem right on top of your soil, which blocked the air to the roots, killing them in the process. Now that you've washed it off, your plants will be fine.

 

[ozzieAI]

What you ended up doing was putting a layer of neem right on top of your soil, which blocked the air to the roots, killing them in the process.

neem oil doesn't work this way...neem breaks down quickly and doesn't leave any residue...

 

[kiwi_growa]

I agree with OzzieAI, Neem oil sometimes leaves a little bit of residue on the top of the soil but never enough to sufocate the whole plant. That's my experience anyway, im sure it varies from product to product just like anything else.

 

[resinryder]

neem oil doesn't work this way...neem breaks down quickly and doesn't leave any residue...

Spray it on top of 6" rockwool cubes and tell me that. Lost a whole run several years ago trying to kill fungus gnats. And no it wasn't a heavy dose in the water. It stayed on top of the cubes, stopped air transference through the flood and drain process and suffocated the root zone. Left a oily film that couldn't be washed away.

 

[SirSteely]

I was a neem fanatic on my first grow and I had bug issues galore, seemed the neem was uneffective. I switched soils and add a mosquito dunk crushed up into each 5gallons of soil.
30 days into second grow havent even seen a gnat.

 

[Gelado`]

All I know is I'll stick to 2ml per liter when I water it in!

 

[ozzieAI]

i will repost this pic here just to demonstrate the results i get applying 5ml/litre of neem oil to my plants. these have had neem oil apply twice before this pic was taken.

sorry to hear those that had a negative response to applying neem and would dearly love to know why it didn't work for you guys...

hope the plants are kicking on BF...

 

[SirSteely]

i will repost this pic here just to demonstrate the results i get applying 5ml/litre of neem oil to my plants. these have had neem oil apply twice before this pic was taken.

View Image

sorry to hear those that had a negative response to applying neem and would dearly love to know why it didn't work for you guys...

hope the plants are kicking on BF...

I am too newbie to really figure out why the neem didnt work for me very well, it seemed like that at about day 45-50 of flower I had a outbreak of rootaphids and mites besides a constant battle with fungus gnats.Untill then I had followed a strick regiment with neem sprayings and drenches as directed. I never noticed any harmful effects from the neem either though, besides a little oily residue on a few leaves after spraying. And I was able to harvest some fine medicine. I still use neem oil, too afraid not to,and try and be proactive about pests now too. Its just doesnt add up that neem caused his root rot though. I think adding a neem drench at a critical moment when the roots were already under stress might have been a catalyst but not the cause. Just my opinion. But nevertheless,this thread has been informative.

 

[Gelado`]

Again, my money is on him having the hydrophobic kind--maybe the other two types would work differently?

 

[ozzieAI]

Again, my money is on him having the hydrophobic kind--maybe the other two types would work differently?

yes you are correct Gelado...and thanks for your post. i have looked into the difference between hydrophobic and pure neem oil.

here is a good summary of what the differences are:
Many people think that 100% crude neem oil is the most effective solution for organic insect and fungal control, but in fact it is most commonly used for soaps, cosmetics, lubricants and other consumer products. As stated by Cornell University, “100% cold pressed neem oil is being sold as a plant wash, but has no pesticide label”. Many companies claim wildly inconsistent uses for crude neem oil, such as pesticide, leaf shine, hair care, etc. and most lack an EPA registration.

Also, crude neem oil contains azadirachtin as one of its main components. When left in the neem oil it can be very unstable causing a decrease in potency, increased phytotoxicity to plants, and a limited shelf life. Due to this lack of quality control and poor efficacy, there has been a need to refine the process and develop a product that is stable, dependable and effective.

Certis, the biopesticide company, has patented an extraction process to separate azadirachtin and clarified neem oil to ensure they are more stable and effective.

Azadirachtin and clarified neem oil are derived from the natural/crude oil. When the natural neem oil is removed from the seeds and treated with alcohol, virtually all of the azadirachtin and related substances separate from the oil itself. The remaining oil - without the azadirachtin - is called Clarified Hydrophobic Extract of Neem Oil, and is effective as a fungicide and miticide. The clarification process makes for better tank mix compatibility, longer shelf life of the product, greater plant tolerance, less phytotoxicity, and it is EPA registered and meets NOP and OMRI requirements.

keep in mind that this write up comes from a site pushing it's products both the clarified hydrophobic neem oil and the extracted Azadirachtin pesticide.

the neem oil i use is PURE neem oil with emulsifier added...

again thanks Gelado...but even the hydrophobic neem oil shouldn't have had that affect on BF's plants...

 

[Gelado`]

He may have just hit them with the oil suspension too late...I lost a holy basil plant to bugs when I brought it inside, and nothing I did could save it. When it finally died, there were no roots left to speak of!

I have both 100% pure neem oil and a neem oil with emulsifier with boosted azadirachtin. I think I'll try the kind with emulsifier first...

 

[ozzieAI]

and a neem oil with emulsifier with boosted azadirachtin

crazy huh..they take it (aza) out and then add it back in?

 

[Gelado`]

Yup, and it doesn't have as much neem funk. It's a German market product.

http://www.bayergarten.de/schnellinformation.cms?ProductId=c11d8eee-4fb3-43a0-9e19-9e3100d2a50c